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 July 19th, 2018, 05:31 PM #1 Member   Joined: Nov 2015 From: New York State Posts: 41 Thanks: 0 Number Sequence 3mE I'm adding value of the digits in a number, and I treat 0 as 1. I have not graphed this. I don't know a lot about math, but I seem to have a way of systematically obtaining a sequence from "normal" numbers. It goes like this: -35 = 2 -34 = 1 -33 = 0 -32 = -1 -31 = -2 -30 = -2 -29 = 7 -28 = 6 -27 = 5 -26 = 4 -25 = 3 -24 = 2 -23 = 1 -22 = 0 -21 = -1 -20 = -1 -19 = 8 -18 = 7 -17 = 6 -16 = 5 -15 = 4 -14 = 3 -13 = 2 -12 = 1 -11 = 0 -10 = 0 -9 = -9 -8 = -8 -7 = -7 -6 = -6 -5 = -5 -4 = -4 -3 = -3 -2 = -2 -1 = -1 0 = 1 1 = 1 2 = 2 3 = 3 4 = 4 5 = 5 6 = 6 7 = 7 8 = 8 9 = 9 10 = 2 11 = 2 12 = 3 13 = 4 14 = 5 15 = 6 16 = 7 17 = 8 18 = 9 19 = 2 20 = 3 21 = 3 22 = 4 23 = 5 24 = 6 25 = 7 26 = 8 27 = 9 28 = 2 29 = 2 30 = 4 31 = 4 32 = 5 33 = 6 34 = 7 35 = 8 Has anyone come up with this sequence before? If yes, is there a name of it, or has it been categorized?
 July 19th, 2018, 07:19 PM #2 Math Team     Joined: May 2013 From: The Astral plane Posts: 1,888 Thanks: 767 Math Focus: Wibbly wobbly timey-wimey stuff. Throw us a bone here. How is -35 --> 2? Wouldn't the values of the digits 3 and 5 give 3 + 5 = 8? It looks like you are treating -35 to be (-3)(5) but that isn't how you defined the process. OEIS doesn't have it. -Dan Last edited by topsquark; July 19th, 2018 at 07:22 PM.
 July 20th, 2018, 07:44 AM #3 Member   Joined: Nov 2015 From: New York State Posts: 41 Thanks: 0 -35, I look at it this way -3 and 5. -3 + 5 = 2, or to make it easier 5 + (-3) = 2. Just adding the numbers that make up -35 and all other numbers that I listed.
 July 20th, 2018, 08:48 AM #4 Member   Joined: Nov 2015 From: New York State Posts: 41 Thanks: 0 Let me give some examples, so that you see better what I mean. Lets try number -10,000. I stated that I count 0 as 1, so 4x0 I count as 4x1 = 4 Then -1 + 4 = 3 Lets try another number, 2438. 2 + 4 + 3 + 8 = 17, and then adding 1 + 7 = 8 I guess, an application of this could be, taking a year 1984 for example. 1 + 9 + 8 + 4 = 22 so that is 2 + 2 = 4 Last edited by Alamar; July 20th, 2018 at 08:59 AM.
 July 21st, 2018, 05:17 AM #5 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,282 Thanks: 931 1234567890 = 1+2+3+4+5+6+7+8+9+0 = 45+1 = 46: 4+6 = 10 ????????
July 22nd, 2018, 05:31 PM   #6
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Joined: Nov 2015
From: New York State

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Quote:
 Originally Posted by Denis 1234567890 = 1+2+3+4+5+6+7+8+9+0 = 45+1 = 46: 4+6 = 10 ????????
Exactly,

1234567890 = 1+2+3+4+5+6+7+8+9+0 = 45+1 = 46: 4+6 = 10
I stated that I treat 0 as 1, so 4 + 6 = 10 = 1 + 1 = 2

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