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.

A242431 Triangle read by rows: T(n, k) = (k + 1)*T(n-1, k) + Sum_{j=k..n-1} T(n-1, j) for k < n, T(n, n) = 1. T(n, k) for n >= 0 and 0 <= k <= n.

Table of values

n a(n)
0 1
1 2
2 1
3 5
4 3
5 1
6 14
7 10
8 4
9 1
10 43
11 35
12 17
13 5
14 1
15 144
16 128
17 74
18 26
19 6
20 1
21 523
22 491
23 329
24 137
25 37
26 7
27 1
28 2048
29 1984
30 1498
31 730
32 230
33 50
34 8
35 1
36 8597
37 8469
38 7011
39 3939
40 1439
41 359
42 65
43 9
44 1
45 38486
46 38230
47 33856
48 21568
49 9068
50 2588
51 530
52 82
53 10
54 1

List of values

[1, 2, 1, 5, 3, 1, 14, 10, 4, 1, 43, 35, 17, 5, 1, 144, 128, 74, 26, 6, 1, 523, 491, 329, 137, 37, 7, 1, 2048, 1984, 1498, 730, 230, 50, 8, 1, 8597, 8469, 7011, 3939, 1439, 359, 65, 9, 1, 38486, 38230, 33856, 21568, 9068, 2588, 530, 82, 10, 1]