A026555 - cp's OEIS frontend

A026555 a(n) = T(n, n-2), T given by A026552. 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	2
4	7
5	13
6	40
7	76
8	226
9	434
10	1279
11	2470
12	7267
13	14085
14	41462
15	80584
16	237484
17	462620
18	1365014
19	2664276
20	7870226
21	15387670
22	45501743
23	89097932
24	263707094
25	517058502
26	1531614109
27	3006637946
28	8912678569
29	17514547015
30	51952990090

[1, 2, 7, 13, 40, 76, 226, 434, 1279, 2470, 7267, 14085, 41462, 80584, 237484, 462620, 1365014, 2664276, 7870226, 15387670, 45501743, 89097932, 263707094, 517058502, 1531614109, 3006637946, 8912678569, 17514547015, 51952990090]

cp's OEIS Frontend

A026555 a(n) = T(n, n-2), T given by A026552. 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