A352277 - cp's OEIS frontend

A352277 a(0) = 1; a(n) = -2 * Sum_{k=1..n} binomial(2n-1,2k-1) * a(n-k).

n	a(n)
0	1
1	-2
2	10
3	-62
4	250
5	3538
6	-109430
7	376738
8	64406170
9	-1496149262
10	-66387156950
11	4120939699138
12	114360544465210
13	-16447057086702062
14	-315993884108535350
15	99921676927889325538
16	1478937314465295441370
17	-907773678752741550637262
18	-14225447208333541085396630

[1, -2, 10, -62, 250, 3538, -109430, 376738, 64406170, -1496149262, -66387156950, 4120939699138, 114360544465210, -16447057086702062, -315993884108535350, 99921676927889325538, 1478937314465295441370, -907773678752741550637262, -14225447208333541085396630]

cp's OEIS Frontend

A352277 a(0) = 1; a(n) = -2 * Sum_{k=1..n} binomial(2n-1,2k-1) * a(n-k).

Table of values

List of values

cp's OEIS Frontend

A352277 a(0) = 1; a(n) = -2 * Sum_{k=1..n} binomial(2*n-1,2*k-1) * a(n-k).

Table of values

List of values

A352277 a(0) = 1; a(n) = -2 * Sum_{k=1..n} binomial(2n-1,2k-1) * a(n-k).