A171876 - cp's OEIS frontend

A171876 Mutual solutions to two classification counting problems: binary block codes of wordlength J with N used words; and classifications of N elements by J partitions.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	3
6	3
7	1
8	1
9	4
10	6
11	19
12	27
13	50
14	56
15	1
16	1
17	5
18	10
19	47
20	131
21	472
22	1326
23	3779
24	9013
25	19963
26	38073
27	65664
28	98804
29	133576
30	158658
31	1
32	1
33	6
34	16
35	103
36	497
37	3253
38	19735
39	120843
40	681474
41	3561696

[1, 1, 1, 1, 1, 3, 3, 1, 1, 4, 6, 19, 27, 50, 56, 1, 1, 5, 10, 47, 131, 472, 1326, 3779, 9013, 19963, 38073, 65664, 98804, 133576, 158658, 1, 1, 6, 16, 103, 497, 3253, 19735, 120843, 681474, 3561696]

cp's OEIS Frontend

A171876 Mutual solutions to two classification counting problems: binary block codes of wordlength J with N used words; and classifications of N elements by J partitions.

Table of values

List of values