A274842 - cp's OEIS frontend

A274842 Number of set partitions of [n] such that the difference between each element and its block index is a multiple of nine.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	2
11	3
12	4
13	5
14	6
15	7
16	8
17	9
18	10
19	21
20	42
21	81
22	152
23	279
24	502
25	885
26	1524
27	2547
28	6629
29	15815
30	35713
31	77769
32	165155
33	344379
34	707693
35	1434461
36	2859871
37	8415994
38	23485835
39	62727630
40	161710529
41	404995340
42	989816263
43	2367377650
44	5547588797

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 21, 42, 81, 152, 279, 502, 885, 1524, 2547, 6629, 15815, 35713, 77769, 165155, 344379, 707693, 1434461, 2859871, 8415994, 23485835, 62727630, 161710529, 404995340, 989816263, 2367377650, 5547588797]

cp's OEIS Frontend

A274842 Number of set partitions of [n] such that the difference between each element and its block index is a multiple of nine.

Table of values

List of values