A274840 - cp's OEIS frontend

A274840 Number of set partitions of [n] such that the difference between each element and its block index is a multiple of seven.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	3
10	4
11	5
12	6
13	7
14	8
15	17
16	34
17	65
18	120
19	215
20	374
21	629
22	1641
23	3919
24	8849
25	19241
26	40707
27	84203
28	170229
29	503902
30	1407019
31	3746718
32	9600121
33	23815820
34	57408783
35	134592586
36	440661179
37	1383544922
38	4206645985
39	12456581554
40	36012285385

[1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 17, 34, 65, 120, 215, 374, 629, 1641, 3919, 8849, 19241, 40707, 84203, 170229, 503902, 1407019, 3746718, 9600121, 23815820, 57408783, 134592586, 440661179, 1383544922, 4206645985, 12456581554, 36012285385]

cp's OEIS Frontend

A274840 Number of set partitions of [n] such that the difference between each element and its block index is a multiple of seven.

Table of values

List of values