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.

A308460 Square array A(n,k), n >= 1, k >= 1, read by antidiagonals, where column k is the expansion of e.g.f. log(Sum_{j>=0} k^binomial(j,2) * x^j/j!).

Table of values

n a(n)
1 1
2 1
3 0
4 1
5 1
6 0
7 1
8 2
9 4
10 0
11 1
12 3
13 20
14 38
15 0
16 1
17 4
18 54
19 624
20 728
21 0
22 1
23 5
24 112
25 3834
26 55248
27 26704
28 0
29 1
30 6
31 200
32 15104
33 1027080
34 13982208
35 1866256
36 0
37 1
38 7
39 324
40 45750
41 9684224
42 1067308488
43 10358360640
44 251548592
45 0
46 1
47 8
48 490
49 116208
50 60225000
51 30458183680
52 4390480193904
53 22792648882176
54 66296291072
55 0

List of values

[1, 1, 0, 1, 1, 0, 1, 2, 4, 0, 1, 3, 20, 38, 0, 1, 4, 54, 624, 728, 0, 1, 5, 112, 3834, 55248, 26704, 0, 1, 6, 200, 15104, 1027080, 13982208, 1866256, 0, 1, 7, 324, 45750, 9684224, 1067308488, 10358360640, 251548592, 0, 1, 8, 490, 116208, 60225000, 30458183680, 4390480193904, 22792648882176, 66296291072, 0]