A026556 - cp's OEIS frontend

A026556 a(n) = T(n, n-3), T given by A026552. Also a(n) = number of integer strings s(0), ..., s(n) counted by T, such that s(n) = 3.

n	a(n)
3	1
4	3
5	8
6	24
7	52
8	156
9	319
10	954
11	1910
12	5696
13	11304
14	33648
15	66514
16	197778
17	390266
18	1159844
19	2286996
20	6795576
21	13397075
22	39809076
23	78489235
24	233262931
25	460030947
26	1367463642
27	2697786052
28	8021305890
29	15830906756
30	47082494816

[1, 3, 8, 24, 52, 156, 319, 954, 1910, 5696, 11304, 33648, 66514, 197778, 390266, 1159844, 2286996, 6795576, 13397075, 39809076, 78489235, 233262931, 460030947, 1367463642, 2697786052, 8021305890, 15830906756, 47082494816]

cp's OEIS Frontend

A026556 a(n) = T(n, n-3), T given by A026552. Also a(n) = number of integer strings s(0), ..., s(n) counted by T, such that s(n) = 3.

Table of values

List of values