What is next in this series 1 4 10 19 21?

Anonymous

∙ 15y ago

Updated: 8/18/2019

34 because differences going up is 3 then 6 then 9 then 11 so then its 13+21=34

* * * * *

And since when is 3, 6, 9, 11 a sequence? of any kind?

One possible solution is

t(n) = (-5x4 + 50x3 - 157x2 + 232x - 108)/12 n = 1, 2, 3, ...

then t(6) = -4

Wiki User

∙ 15y ago

What else can I help you with?

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