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.

A268435 Triangle read by rows, T(n,k) = RF(n-k+1,n-k)*S2(n,k) where RF denotes the rising factorial and S2 the Stirling set numbers, for n>=0 and 0<=k<=n.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 2
5 1
6 0
7 12
8 6
9 1
10 0
11 120
12 84
13 12
14 1
15 0
16 1680
17 1800
18 300
19 20
20 1
21 0
22 30240
23 52080
24 10800
25 780
26 30
27 1
28 0
29 665280
30 1905120
31 505680
32 42000
33 1680
34 42
35 1
36 0
37 17297280
38 84490560
39 29211840
40 2857680
41 126000
42 3192
43 56
44 1

List of values

[1, 0, 1, 0, 2, 1, 0, 12, 6, 1, 0, 120, 84, 12, 1, 0, 1680, 1800, 300, 20, 1, 0, 30240, 52080, 10800, 780, 30, 1, 0, 665280, 1905120, 505680, 42000, 1680, 42, 1, 0, 17297280, 84490560, 29211840, 2857680, 126000, 3192, 56, 1]