sequence of number

Jan 2017
2
0
Canada
Hi

Can you help to find the next number for this sequence :

19 13 23 22 27 31...?

I have been trying since last week.

Thanks
 

Benit13

Math Team
Apr 2014
2,166
738
Glasgow
I think the pattern is:


First two terms are 19 and 13.
Subsequent odd terms: Add 4 to last odd term
Subsequent even terms: Add 9 to last even term

The next number in the sequence is the seventh term (and odd term). Therefore the next number is 31, because we add 4 to 27.
 
Sep 2016
88
30
India
$19, 13,$

Now, add $4$ with $19$

$19+4=23$

$19, 13, 23$

Next, add $9$ with $13$

$13+9=22$

$19, 13, 23, 22$

add $4$ with $23$

$23+4=27$

$19, 13, 23, 22, 27$

add $9$ with $22$

$22+9=31$

$19, 13, 23, 22, 27, 31$

add $4$ with $27$

$27+4=31$

$19, 13, 23, 22, 27, 31, 31,...$

Thus, next number is $31$