A296953 - cp's OEIS frontend

A296953 Number of bisymmetric, quasitrivial, and order-preserving binary operations on the n-element set {1,...,n}.

n	a(n)
0	0
1	1
2	4
3	10
4	22
5	46
6	94
7	190
8	382
9	766
10	1534
11	3070
12	6142
13	12286
14	24574
15	49150
16	98302
17	196606
18	393214
19	786430
20	1572862
21	3145726
22	6291454
23	12582910
24	25165822
25	50331646
26	100663294
27	201326590
28	402653182
29	805306366
30	1610612734
31	3221225470
32	6442450942
33	12884901886

[0, 1, 4, 10, 22, 46, 94, 190, 382, 766, 1534, 3070, 6142, 12286, 24574, 49150, 98302, 196606, 393214, 786430, 1572862, 3145726, 6291454, 12582910, 25165822, 50331646, 100663294, 201326590, 402653182, 805306366, 1610612734, 3221225470, 6442450942, 12884901886]

cp's OEIS Frontend

A296953 Number of bisymmetric, quasitrivial, and order-preserving binary operations on the n-element set {1,...,n}.

Table of values

List of values