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.

A252527 Number of (n+2) X (3+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.

Table of values

n a(n)
1 621
2 341
3 466
4 610
5 1114
6 1748
7 2332
8 4244
9 6760
10 9112
11 16552
12 26576
13 36016
14 65360
15 105376
16 143200
17 259744
18 419648
19 571072
20 1035584
21 1674880
22 2280832
23 4135552
24 6692096
25 9116416
26 16528640
27 26753536
28 36451840
29 66087424
30 106984448
31 145779712

List of values

[621, 341, 466, 610, 1114, 1748, 2332, 4244, 6760, 9112, 16552, 26576, 36016, 65360, 105376, 143200, 259744, 419648, 571072, 1035584, 1674880, 2280832, 4135552, 6692096, 9116416, 16528640, 26753536, 36451840, 66087424, 106984448, 145779712]