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.

A229870 T(n,k)=Number of n X n 0..k arrays with corresponding row and column sums equal.

Table of values

n a(n)
1 2
2 3
3 8
4 4
5 27
6 80
7 5
8 64
9 1215
10 2432
11 6
12 125
13 8704
14 384183
15 247552
16 7
17 216
18 40625
19 15106048
20 923742873
21 88060928
22 8
23 343
24 143856
25 266515625
26 354003288064
27 17451302074317
28 112371410944
29 9
30 512
31 420175
32 2805425280
33 36821326171875

List of values

[2, 3, 8, 4, 27, 80, 5, 64, 1215, 2432, 6, 125, 8704, 384183, 247552, 7, 216, 40625, 15106048, 923742873, 88060928, 8, 343, 143856, 266515625, 354003288064, 17451302074317, 112371410944, 9, 512, 420175, 2805425280, 36821326171875]