A026539 - cp's OEIS frontend

A026539 a(n) = T(n,n-2), T given by A026536. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n) = 2.

n	a(n)
2	1
3	1
4	5
5	8
6	27
7	49
8	150
9	284
10	845
11	1625
12	4797
13	9288
14	27377
15	53207
16	156900
17	305720
18	902394
19	1761882
20	5205950
21	10181720
22	30114073
23	58983859
24	174609162
25	342449340
26	1014555607
27	1992082339
28	5906040623
29	11608506392
30	34438443075

[1, 1, 5, 8, 27, 49, 150, 284, 845, 1625, 4797, 9288, 27377, 53207, 156900, 305720, 902394, 1761882, 5205950, 10181720, 30114073, 58983859, 174609162, 342449340, 1014555607, 1992082339, 5906040623, 11608506392, 34438443075]

cp's OEIS Frontend

A026539 a(n) = T(n,n-2), T given by A026536. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n) = 2.

Table of values

List of values