A246070 - cp's OEIS frontend

A246070 Number A(n,k) of endofunctions f on [2n] satisfying f^k(i) = i for all i in [n]; square array A(n,k), n>=0, k>=0, read by antidiagonals.

n	a(n)
0	1
1	1
2	4
3	1
4	2
5	256
6	1
7	3
8	16
9	46656
10	1
11	2
12	50
13	216
14	16777216
15	1
16	3
17	36
18	1626
19	4096
20	10000000000
21	1
22	2
23	56
24	1440
25	83736
26	100000
27	8916100448256
28	1
29	3
30	16
31	2688
32	84624
33	6026120
34	2985984
35	11112006825558016
36	1
37	2
38	70
39	720
40	215760
41	7675200
42	571350096
43	105413504
44	18446744073709551616

[1, 1, 4, 1, 2, 256, 1, 3, 16, 46656, 1, 2, 50, 216, 16777216, 1, 3, 36, 1626, 4096, 10000000000, 1, 2, 56, 1440, 83736, 100000, 8916100448256, 1, 3, 16, 2688, 84624, 6026120, 2985984, 11112006825558016, 1, 2, 70, 720, 215760, 7675200, 571350096, 105413504, 18446744073709551616]

cp's OEIS Frontend

A246070 Number A(n,k) of endofunctions f on [2n] satisfying f^k(i) = i for all i in [n]; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

List of values