A210676 - cp's OEIS frontend

A210676 a(0)=1; thereafter a(n) = -3Sum_{k=1..n} binomial(2n,2k)a(n-k).

n	a(n)
0	1
1	-3
2	51
3	-2163
4	171231
5	-21785223
6	4065116811
7	-1045879150683
8	354837765112791
9	-153492920593758543
10	82453488412268175171
11	-53850296379425229208803
12	42020794900180632536559951
13	-38611325264740403135096141463
14	41264215393801752999038147563131
15	-50749285521783354479522581233836523

[1, -3, 51, -2163, 171231, -21785223, 4065116811, -1045879150683, 354837765112791, -153492920593758543, 82453488412268175171, -53850296379425229208803, 42020794900180632536559951, -38611325264740403135096141463, 41264215393801752999038147563131, -50749285521783354479522581233836523]

cp's OEIS Frontend

A210676 a(0)=1; thereafter a(n) = -3Sum_{k=1..n} binomial(2n,2k)a(n-k).

Table of values

List of values

cp's OEIS Frontend

A210676 a(0)=1; thereafter a(n) = -3*Sum_{k=1..n} binomial(2n,2k)*a(n-k).

Table of values

List of values

A210676 a(0)=1; thereafter a(n) = -3Sum_{k=1..n} binomial(2n,2k)a(n-k).