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.

A371898 Triangle read by rows: T(n, k) = n * k * (T(n-1, k-1) + T(n-1, k)) for k > 0 with initial values T(n, 0) = 1 and T(i, j) = 0 for j > i.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 4
5 4
6 1
7 15
8 48
9 36
10 1
11 64
12 504
13 1008
14 576
15 1
16 325
17 5680
18 22680
19 31680
20 14400
21 1
22 1956
23 72060
24 510480
25 1304640
26 1382400
27 518400
28 1
29 13699
30 1036224
31 12233340
32 50823360
33 94046400
34 79833600
35 25401600
36 1
37 109600
38 16798768
39 318469536
40 2017814400
41 5794790400
42 8346240000
43 5893171200
44 1625702400

List of values

[1, 1, 1, 1, 4, 4, 1, 15, 48, 36, 1, 64, 504, 1008, 576, 1, 325, 5680, 22680, 31680, 14400, 1, 1956, 72060, 510480, 1304640, 1382400, 518400, 1, 13699, 1036224, 12233340, 50823360, 94046400, 79833600, 25401600, 1, 109600, 16798768, 318469536, 2017814400, 5794790400, 8346240000, 5893171200, 1625702400]