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.

A157637 Triangle, T(n, k, m) = 1 if (k=0 or k=n), otherwise (m*(n-k) + 1)*T(n-1, k-1, m) + (m*k + 1)*T(n-1, k, m) + m*A157636(n, k)*T(n-2, k-1, m) for m = 1, read by rows.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 5
5 1
6 1
7 16
8 16
9 1
10 1
11 42
12 136
13 42
14 1
15 1
16 99
17 816
18 816
19 99
20 1
21 1
22 219
23 3951
24 10200
25 3951
26 219
27 1
28 1
29 466
30 16632
31 94827
32 94827
33 16632
34 466
35 1
36 1
37 968
38 63670
39 716160
40 1601070
41 716160
42 63670
43 968
44 1
45 1
46 1981
47 228112
48 4657522
49 20836740
50 20836740
51 4657522
52 228112
53 1981
54 1

List of values

[1, 1, 1, 1, 5, 1, 1, 16, 16, 1, 1, 42, 136, 42, 1, 1, 99, 816, 816, 99, 1, 1, 219, 3951, 10200, 3951, 219, 1, 1, 466, 16632, 94827, 94827, 16632, 466, 1, 1, 968, 63670, 716160, 1601070, 716160, 63670, 968, 1, 1, 1981, 228112, 4657522, 20836740, 20836740, 4657522, 228112, 1981, 1]