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.

A292948 Square array A(n,k), n>=0, k>=0, read by antidiagonals, where A(0,k) = 1 and A(n,k) = (-1)^(k+1) * Sum_{i=0..n-1} (-1)^i * binomial(n-1,i) * binomial(i+1,k) * A(n-1-i,k) for n > 0.

Table of values

n a(n)
0 1
1 1
2 -1
3 1
4 1
5 2
6 1
7 0
8 -1
9 -5
10 1
11 0
12 1
13 -2
14 15
15 1
16 0
17 0
18 -3
19 9
20 -52
21 1
22 0
23 0
24 1
25 9
26 -4
27 203
28 1
29 0
30 0
31 0
32 -4
33 -40
34 -95
35 -877
36 1
37 0
38 0
39 0
40 1
41 10
42 210
43 414
44 4140
45 1
46 0
47 0
48 0
49 0
50 -5
51 -10
52 -1176
53 49
54 -21147
55 1
56 0
57 0
58 0
59 0
60 1
61 15
62 -105
63 7273
64 -10088
65 115975
66 1
67 0
68 0

List of values

[1, 1, -1, 1, 1, 2, 1, 0, -1, -5, 1, 0, 1, -2, 15, 1, 0, 0, -3, 9, -52, 1, 0, 0, 1, 9, -4, 203, 1, 0, 0, 0, -4, -40, -95, -877, 1, 0, 0, 0, 1, 10, 210, 414, 4140, 1, 0, 0, 0, 0, -5, -10, -1176, 49, -21147, 1, 0, 0, 0, 0, 1, 15, -105, 7273, -10088, 115975, 1, 0, 0]