A265706 - cp's OEIS frontend

A265706 Rectangular array A read by upward antidiagonals: A(n,m) is the number of total difunctional (regular) binary relations between an n-element set and an m-element set.

n	a(n)
1	1
2	3
3	1
4	7
5	5
6	1
7	15
8	19
9	9
10	1
11	31
12	65
13	49
14	17
15	1
16	63
17	211
18	225
19	127
20	33
21	1
22	127
23	665
24	961
25	749
26	337
27	65
28	1
29	255
30	2059
31	3969
32	3991
33	2505
34	919
35	129
36	1
37	511
38	6305
39	16129
40	20237
41	16201
42	8525
43	2569
44	257
45	1
46	1023
47	19171
48	65025
49	100087
50	97713
51	65911

[1, 3, 1, 7, 5, 1, 15, 19, 9, 1, 31, 65, 49, 17, 1, 63, 211, 225, 127, 33, 1, 127, 665, 961, 749, 337, 65, 1, 255, 2059, 3969, 3991, 2505, 919, 129, 1, 511, 6305, 16129, 20237, 16201, 8525, 2569, 257, 1, 1023, 19171, 65025, 100087, 97713, 65911]

cp's OEIS Frontend

A265706 Rectangular array A read by upward antidiagonals: A(n,m) is the number of total difunctional (regular) binary relations between an n-element set and an m-element set.

Table of values

List of values