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.

A384987 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 A384984.

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 1
5 0
6 1
7 2
8 9
9 0
10 1
11 3
12 20
13 133
14 0
15 1
16 4
17 33
18 320
19 3185
20 0
21 1
22 5
23 48
24 567
25 7920
26 88521
27 0
28 1
29 6
30 65
31 880
32 14529
33 232832
34 2709625
35 0
36 1
37 7
38 84
39 1265
40 23360
41 448203
42 7695232
43 59590189
44 0
45 1
46 8
47 105
48 1728
49 34785
50 752064
51 15740001
52 220228416
53 -2800437663
54 0

List of values

[1, 1, 0, 1, 1, 0, 1, 2, 9, 0, 1, 3, 20, 133, 0, 1, 4, 33, 320, 3185, 0, 1, 5, 48, 567, 7920, 88521, 0, 1, 6, 65, 880, 14529, 232832, 2709625, 0, 1, 7, 84, 1265, 23360, 448203, 7695232, 59590189, 0, 1, 8, 105, 1728, 34785, 752064, 15740001, 220228416, -2800437663, 0]