A351941 - cp's OEIS frontend

A351941 a(0) = 1; a(n) = -Sum_{k=0..floor((n-1)/2)} binomial(n-1,2k) a(k) * a(n-2*k-1).

n	a(n)
0	1
1	-1
2	1
3	0
4	-3
5	8
6	-3
7	-57
8	225
9	-96
10	-2991
11	13873
12	-255
13	-313506
14	1495089
15	1473024
16	-54621231
17	243365688
18	705129201
19	-14109279483
20	53228648865
21	349791931434
22	-5000315242479
23	13572033641204
24	204954070915977
25	-2294997521498172
26	2691551249257017

[1, -1, 1, 0, -3, 8, -3, -57, 225, -96, -2991, 13873, -255, -313506, 1495089, 1473024, -54621231, 243365688, 705129201, -14109279483, 53228648865, 349791931434, -5000315242479, 13572033641204, 204954070915977, -2294997521498172, 2691551249257017]

cp's OEIS Frontend

A351941 a(0) = 1; a(n) = -Sum_{k=0..floor((n-1)/2)} binomial(n-1,2k) a(k) * a(n-2*k-1).

Table of values

List of values

cp's OEIS Frontend

A351941 a(0) = 1; a(n) = -Sum_{k=0..floor((n-1)/2)} binomial(n-1,2*k) * a(k) * a(n-2*k-1).

Table of values

List of values

A351941 a(0) = 1; a(n) = -Sum_{k=0..floor((n-1)/2)} binomial(n-1,2k) a(k) * a(n-2*k-1).