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.

A293991 Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: exp(Sum_{j=1..k+1} binomial(k,j-1)*x^j/j).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 2
9 1
10 1
11 1
12 3
13 4
14 1
15 1
16 1
17 4
18 9
19 10
20 1
21 1
22 1
23 5
24 16
25 33
26 26
27 1
28 1
29 1
30 6
31 25
32 76
33 141
34 76
35 1
36 1
37 1
38 7
39 36
40 145
41 436
42 651
43 232
44 1
45 1
46 1
47 8
48 49
49 246
50 1025
51 2776
52 3333
53 764
54 1
55 1
56 1
57 9
58 64
59 385
60 2046
61 8245
62 19384
63 18369
64 2620
65 1
66 1
67 1
68 10
69 81

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 3, 4, 1, 1, 1, 4, 9, 10, 1, 1, 1, 5, 16, 33, 26, 1, 1, 1, 6, 25, 76, 141, 76, 1, 1, 1, 7, 36, 145, 436, 651, 232, 1, 1, 1, 8, 49, 246, 1025, 2776, 3333, 764, 1, 1, 1, 9, 64, 385, 2046, 8245, 19384, 18369, 2620, 1, 1, 1, 10, 81]