A276721 - cp's OEIS frontend

A276721 Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most five elements.

n	a(n)
0	1
1	1
2	2
3	5
4	15
5	52
6	151
7	409
8	1100
9	3012
10	8487
11	23949
12	67179
13	187431
14	521889
15	1455667
16	4066220
17	11363476
18	31747666
19	88659265
20	247559056
21	691294366
22	1930595096
23	5391864630
24	15058449487
25	42054270461
26	117445036871
27	327989716409
28	915985822220
29	2558107420307

[1, 1, 2, 5, 15, 52, 151, 409, 1100, 3012, 8487, 23949, 67179, 187431, 521889, 1455667, 4066220, 11363476, 31747666, 88659265, 247559056, 691294366, 1930595096, 5391864630, 15058449487, 42054270461, 117445036871, 327989716409, 915985822220, 2558107420307]

cp's OEIS Frontend

A276721 Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most five elements.

Table of values

List of values