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.

A223641 Number of nX5 0..1 arrays with rows, columns, diagonals and antidiagonals unimodal.

Table of values

n a(n)
1 16
2 256
3 2014
4 9808
5 36947
6 120307
7 354726
8 967582
9 2469396
10 5941152
11 13555296
12 29475566
13 61346859
14 122671803
15 236477826
16 440811016
17 796753648
18 1399853788
19 2396080742
20 4003682172
21 6542620323
22 10473608867
23 16449161244
24 25379498938

List of values

[16, 256, 2014, 9808, 36947, 120307, 354726, 967582, 2469396, 5941152, 13555296, 29475566, 61346859, 122671803, 236477826, 440811016, 796753648, 1399853788, 2396080742, 4003682172, 6542620323, 10473608867, 16449161244, 25379498938]