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.

A303241 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 1
2 123
3 236
4 1676
5 11111
6 90728
7 686376
8 5320294
9 42575026
10 345713805
11 2801331069
12 22819881078
13 186805008216
14 1528961515269
15 12526736579284
16 102761508859349
17 843215927212293
18 6920803923723062
19 56822359222413226
20 466601882566586351

List of values

[1, 123, 236, 1676, 11111, 90728, 686376, 5320294, 42575026, 345713805, 2801331069, 22819881078, 186805008216, 1528961515269, 12526736579284, 102761508859349, 843215927212293, 6920803923723062, 56822359222413226, 466601882566586351]

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

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