cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A245910 Number A(n,k) of pairs of endofunctions f, g on [n] satisfying f(g^k(i)) = f(i) for all i in [n]; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 16
6 1
7 1
8 10
9 729
10 1
11 1
12 12
13 159
14 65536
15 1
16 1
17 10
18 249
19 3496
20 9765625
21 1
22 1
23 12
24 207
25 7744
26 98345
27 2176782336
28 1
29 1
30 10
31 249
32 6856
33 326745
34 3373056
35 678223072849
36 1
37 1
38 12
39 159
40 9184
41 302345
42 17773056
43 136535455
44 281474976710656

List of values

[1, 1, 1, 1, 1, 16, 1, 1, 10, 729, 1, 1, 12, 159, 65536, 1, 1, 10, 249, 3496, 9765625, 1, 1, 12, 207, 7744, 98345, 2176782336, 1, 1, 10, 249, 6856, 326745, 3373056, 678223072849, 1, 1, 12, 159, 9184, 302345, 17773056, 136535455, 281474976710656]