Best Answer

The Series has the formula 3n + 1/2(n - 1)(n - 2) = 3n + 1/2(n2 - 3n + 2)

which simplifies to, 1/2(n2 +3n + 2)

Q: What is the nth term for 3 6 10 15 21 28 36?

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(n^2+n)/2

after -9 it is -15 then -21, -27 and the ninth is -36

f = 10n + (n - 1)^2 For n=10 f = 10(10) + (10 - 1)^2 f = 181

Assuming the pattern would continue: 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13...

23-2nthis guy has a great way of explaining it, so look at his...What_is_the_nth_term_for_3_7_11_15_19

Related questions

(n^2+n)/2

the anser is that you are stupid

after -9 it is -15 then -21, -27 and the ninth is -36

10n + 1

(1+n) x n/2 or (n + n2)/2

A single number, such as 1521273339 does not define a sequence. There is no nth term for a signle number.

The nth term is n2 + 4n.

1, 3, 6, 10, 15 ,21 The nth term for the sequence (where you replace n with the term you want to find) is: (n(n+1))/2

nth term = 5 +8n

The nth term is 25-4n and so the next term will be 5

f = 10n + (n - 1)^2 For n=10 f = 10(10) + (10 - 1)^2 f = 181

It is 4n+5 and so the next term will be 25