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.

A384690 Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A384689.

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 1
5 0
6 1
7 2
8 7
9 0
10 1
11 3
12 16
13 106
14 0
15 1
16 4
17 27
18 254
19 2593
20 0
21 1
22 5
23 40
24 450
25 6328
26 89796
27 0
28 1
29 6
30 55
31 700
32 11457
33 220362
34 4085029
35 0
36 1
37 7
38 72
39 1010
40 18256
41 402468
42 10016860
43 232694806
44 0
45 1
46 8
47 91
48 1386
49 27025
50 648564
51 18326853
52 568220102
53 16053415249
54 0

List of values

[1, 1, 0, 1, 1, 0, 1, 2, 7, 0, 1, 3, 16, 106, 0, 1, 4, 27, 254, 2593, 0, 1, 5, 40, 450, 6328, 89796, 0, 1, 6, 55, 700, 11457, 220362, 4085029, 0, 1, 7, 72, 1010, 18256, 402468, 10016860, 232694806, 0, 1, 8, 91, 1386, 27025, 648564, 18326853, 568220102, 16053415249, 0]