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.

A232103 Square array read by antidiagonals: T(m,n) = number of ways of drawing a simple loop on an m x n rectangular lattice of dots in such a way that it touches each edge.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 5
6 1
7 1
8 15
9 15
10 1
11 1
12 39
13 106
14 39
15 1
16 1
17 97
18 582
19 582
20 97
21 1
22 1
23 237
24 2952
25 6074
26 2952
27 237
28 1
29 1
30 575
31 14488
32 56778
33 56778
34 14488
35 575
36 1
37 1
38 1391
39 69982
40 510600
41 943340
42 510600
43 69982
44 1391
45 1
46 1
47 3361
48 335356
49 4502836
50 15009212
51 15009212

List of values

[1, 1, 1, 1, 5, 1, 1, 15, 15, 1, 1, 39, 106, 39, 1, 1, 97, 582, 582, 97, 1, 1, 237, 2952, 6074, 2952, 237, 1, 1, 575, 14488, 56778, 56778, 14488, 575, 1, 1, 1391, 69982, 510600, 943340, 510600, 69982, 1391, 1, 1, 3361, 335356, 4502836, 15009212, 15009212]