A287275 - cp's OEIS frontend

A287275 Number of set partitions of [n] such that for each block all absolute differences between consecutive elements are <= three.

n	a(n)
0	1
1	1
2	2
3	5
4	15
5	47
6	150
7	481
8	1545
9	4965
10	15958
11	51293
12	164871
13	529947
14	1703418
15	5475329
16	17599457
17	56570281
18	181834970
19	584475733
20	1878691887
21	6038716423
22	19410365422
23	62391120801
24	200545011401
25	644615789581
26	2072001259342
27	6660074556205
28	21407609138375

[1, 1, 2, 5, 15, 47, 150, 481, 1545, 4965, 15958, 51293, 164871, 529947, 1703418, 5475329, 17599457, 56570281, 181834970, 584475733, 1878691887, 6038716423, 19410365422, 62391120801, 200545011401, 644615789581, 2072001259342, 6660074556205, 21407609138375]

cp's OEIS Frontend

A287275 Number of set partitions of [n] such that for each block all absolute differences between consecutive elements are <= three.

Table of values

List of values