A265417 - cp's OEIS frontend

A265417 Rectangular array T(n,m), read by upward antidiagonals: T(n,m) is the number of difunctional (regular) binary relations between an n-element set and an m-element set.

n	a(n)
1	2
2	4
3	4
4	8
5	12
6	8
7	16
8	34
9	34
10	16
11	32
12	96
13	128
14	96
15	32
16	64
17	274
18	466
19	466
20	274
21	64
22	128
23	792
24	1688
25	2100
26	1688
27	792
28	128
29	256
30	2314
31	6154
32	9226
33	9226
34	6154
35	2314
36	256
37	512
38	6816
39	22688
40	40356
41	48032
42	40356
43	22688
44	6816
45	512
46	1024
47	20194
48	84706
49	177466
50	245554
51	245554
52	177466
53	84706
54	20194
55	1024
56	2048
57	60072
58	320168

[2, 4, 4, 8, 12, 8, 16, 34, 34, 16, 32, 96, 128, 96, 32, 64, 274, 466, 466, 274, 64, 128, 792, 1688, 2100, 1688, 792, 128, 256, 2314, 6154, 9226, 9226, 6154, 2314, 256, 512, 6816, 22688, 40356, 48032, 40356, 22688, 6816, 512, 1024, 20194, 84706, 177466, 245554, 245554, 177466, 84706, 20194, 1024, 2048, 60072, 320168]

cp's OEIS Frontend

A265417 Rectangular array T(n,m), read by upward antidiagonals: T(n,m) is the number of difunctional (regular) binary relations between an n-element set and an m-element set.

Table of values

List of values