A026587 - cp's OEIS frontend

A026587 a(n) = T(n, n-2), T given by A026584. 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	9
6	28
7	62
8	167
9	399
10	1024
11	2518
12	6359
13	15819
14	39759
15	99427
16	249699
17	626203
18	1573524
19	3953446
20	9943905
21	25019005
22	62994733
23	158680545
24	399936573
25	1008438757
26	2543992514
27	6420413940
28	16210331727
29	40943722115
30	103453402718

[1, 1, 5, 9, 28, 62, 167, 399, 1024, 2518, 6359, 15819, 39759, 99427, 249699, 626203, 1573524, 3953446, 9943905, 25019005, 62994733, 158680545, 399936573, 1008438757, 2543992514, 6420413940, 16210331727, 40943722115, 103453402718]

cp's OEIS Frontend

A026587 a(n) = T(n, n-2), T given by A026584. 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