A287276 - cp's OEIS frontend

A287276 Number of set partitions of [n] such that for each block all absolute differences between consecutive elements are <= four.

n	a(n)
0	1
1	1
2	2
3	5
4	15
5	52
6	188
7	696
8	2606
9	9800
10	36931
11	139303
12	525658
13	1983925
14	7488281
15	28265353
16	106692425
17	402731694
18	1520195297
19	5738304135
20	21660476556
21	81762200416
22	308629323572
23	1164989004846
24	4397506361848
25	16599351862867
26	62657893108843
27	236515956134402

[1, 1, 2, 5, 15, 52, 188, 696, 2606, 9800, 36931, 139303, 525658, 1983925, 7488281, 28265353, 106692425, 402731694, 1520195297, 5738304135, 21660476556, 81762200416, 308629323572, 1164989004846, 4397506361848, 16599351862867, 62657893108843, 236515956134402]

cp's OEIS Frontend

A287276 Number of set partitions of [n] such that for each block all absolute differences between consecutive elements are <= four.

Table of values

List of values