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.

A252536 Number of (4+2) X (n+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)
1 535
2 426
3 610
4 790
5 1592
6 2440
7 3160
8 6368
9 9760
10 12640
11 25472
12 39040
13 50560
14 101888
15 156160
16 202240
17 407552
18 624640
19 808960
20 1630208
21 2498560
22 3235840
23 6520832
24 9994240
25 12943360
26 26083328
27 39976960
28 51773440
29 104333312
30 159907840

List of values

[535, 426, 610, 790, 1592, 2440, 3160, 6368, 9760, 12640, 25472, 39040, 50560, 101888, 156160, 202240, 407552, 624640, 808960, 1630208, 2498560, 3235840, 6520832, 9994240, 12943360, 26083328, 39976960, 51773440, 104333312, 159907840]