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.

A303324 Number of nX7 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 1
2 128
3 4
4 46
5 368
6 758
7 2956
8 15494
9 44101
10 190416
11 843033
12 3033091
13 12413910
14 51530654
15 201376755
16 814350745
17 3304173349
18 13195116320
19 53237817569
20 214790465512
21 862745046281
22 3476740567795
23 14008372152609
24 56369700131001

List of values

[1, 128, 4, 46, 368, 758, 2956, 15494, 44101, 190416, 843033, 3033091, 12413910, 51530654, 201376755, 814350745, 3304173349, 13195116320, 53237817569, 214790465512, 862745046281, 3476740567795, 14008372152609, 56369700131001]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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