A347985 - cp's OEIS frontend

A347985 a(n) = [x^n] (2n)! Sum_{k=0..2n} binomial(x-2n,k).

n	a(n)
0	1
1	-3
2	131
3	-8955
4	893249
5	-117408375
6	19180128407
7	-3747886705563
8	852713408774513
9	-221431482383149467
10	64629367172619230475
11	-20945446993569455512155
12	7463226827397324296491489
13	-2899926767958744905966692575

[1, -3, 131, -8955, 893249, -117408375, 19180128407, -3747886705563, 852713408774513, -221431482383149467, 64629367172619230475, -20945446993569455512155, 7463226827397324296491489, -2899926767958744905966692575]

cp's OEIS Frontend

A347985 a(n) = [x^n] (2n)! Sum_{k=0..2n} binomial(x-2n,k).

Table of values

List of values

cp's OEIS Frontend

A347985 a(n) = [x^n] (2*n)! * Sum_{k=0..2*n} binomial(x-2*n,k).

Table of values

List of values

A347985 a(n) = [x^n] (2n)! Sum_{k=0..2n} binomial(x-2n,k).