A026557 - cp's OEIS frontend

A026557 a(n) = T(n, n-4), T given by A026552. 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	3
6	12
7	28
8	93
9	201
10	631
11	1316
12	4037
13	8259
14	25052
15	50680
16	152782
17	306958
18	921982
19	1844304
20	5526849
21	11024331
22	32987492
23	65675764
24	196323853
25	390374193
26	1166171943
27	2316881892
28	6918228187
29	13737041045
30	41007165500

[1, 3, 12, 28, 93, 201, 631, 1316, 4037, 8259, 25052, 50680, 152782, 306958, 921982, 1844304, 5526849, 11024331, 32987492, 65675764, 196323853, 390374193, 1166171943, 2316881892, 6918228187, 13737041045, 41007165500]

cp's OEIS Frontend

A026557 a(n) = T(n, n-4), T given by A026552. 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