A025229 - cp's OEIS frontend

A025229 a(n) = a(1)a(n-1) + a(2)a(n-2) + ...+ a(n-1)*a(1) for n >= 3, with initial terms 1,3.

n	a(n)
1	1
2	3
3	6
4	21
5	78
6	318
7	1356
8	5997
9	27222
10	126138
11	594132
12	2836290
13	13692300
14	66729180
15	327855768
16	1622216829
17	8076311142
18	40427919714
19	203353800324
20	1027318915254
21	5210182030308
22	26517609163812
23	135397544040744
24	693364054299474

[1, 3, 6, 21, 78, 318, 1356, 5997, 27222, 126138, 594132, 2836290, 13692300, 66729180, 327855768, 1622216829, 8076311142, 40427919714, 203353800324, 1027318915254, 5210182030308, 26517609163812, 135397544040744, 693364054299474]

cp's OEIS Frontend

A025229 a(n) = a(1)a(n-1) + a(2)a(n-2) + ...+ a(n-1)*a(1) for n >= 3, with initial terms 1,3.

Table of values

List of values

cp's OEIS Frontend

A025229 a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 3, with initial terms 1,3.

Table of values

List of values

A025229 a(n) = a(1)a(n-1) + a(2)a(n-2) + ...+ a(n-1)*a(1) for n >= 3, with initial terms 1,3.