A026541 - cp's OEIS frontend

A026541 a(n) = T(n,n-4), T given by A026536. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n) = 4.

n	a(n)
4	1
5	2
6	9
7	19
8	65
9	136
10	430
11	886
12	2721
13	5538
14	16793
15	33887
16	102102
17	204856
18	615024
19	1229280
20	3682545
21	7341786
22	21963161
23	43712603
24	130648089
25	259726104
26	775797750
27	1541084142
28	4601346295
29	9135694750
30	27270124455
31	54125522793

[1, 2, 9, 19, 65, 136, 430, 886, 2721, 5538, 16793, 33887, 102102, 204856, 615024, 1229280, 3682545, 7341786, 21963161, 43712603, 130648089, 259726104, 775797750, 1541084142, 4601346295, 9135694750, 27270124455, 54125522793]

cp's OEIS Frontend

A026541 a(n) = T(n,n-4), T given by A026536. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n) = 4.

Table of values

List of values