A361884 - cp's OEIS frontend

A361884 a(n) = (1/n) * Sum_{k = 0..n} (-1)^(n+k) * (n + 2k) binomial(n+k-1,k)^3.

n	a(n)
1	2
2	66
3	2540
4	110530
5	5197752
6	257490156
7	13238524728
8	699822144450
9	37800431926400
10	2077184897317816
11	115757876008359312
12	6526739641107783916
13	371641758587326581200
14	21341134886976332825400
15	1234474507620634579565040

[2, 66, 2540, 110530, 5197752, 257490156, 13238524728, 699822144450, 37800431926400, 2077184897317816, 115757876008359312, 6526739641107783916, 371641758587326581200, 21341134886976332825400, 1234474507620634579565040]

cp's OEIS Frontend

A361884 a(n) = (1/n) * Sum_{k = 0..n} (-1)^(n+k) * (n + 2k) binomial(n+k-1,k)^3.

Table of values

List of values

cp's OEIS Frontend

A361884 a(n) = (1/n) * Sum_{k = 0..n} (-1)^(n+k) * (n + 2*k) * binomial(n+k-1,k)^3.

Table of values

List of values

A361884 a(n) = (1/n) * Sum_{k = 0..n} (-1)^(n+k) * (n + 2k) binomial(n+k-1,k)^3.