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.

A223756 Number of n X 2 0..3 arrays with rows, antidiagonals and columns unimodal.

Table of values

n a(n)
1 16
2 256
3 2500
4 16900
5 87616
6 372100
7 1352569
8 4338889
9 12559936
10 33362176
11 82373776
12 190992400
13 419266576
14 877225924
15 1759047481
16 3396208729
17 6338070544
18 11471266816
19 20192978404
20 34657779556
21 58123423744
22 95427859396

List of values

[16, 256, 2500, 16900, 87616, 372100, 1352569, 4338889, 12559936, 33362176, 82373776, 190992400, 419266576, 877225924, 1759047481, 3396208729, 6338070544, 11471266816, 20192978404, 34657779556, 58123423744, 95427859396]