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.

A228281 Number of nX6 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically or nw-se diagonally.

Table of values

n a(n)
1 8
2 28
3 337
4 2448
5 21166
6 172082
7 1428523
8 11771298
9 97268701
10 802886174
11 6629901197
12 54739811878
13 451976078779
14 3731849749697
15 30812948919061
16 254414847888742
17 2100639733295629
18 17344457600010491
19 143208852222784259

List of values

[8, 28, 337, 2448, 21166, 172082, 1428523, 11771298, 97268701, 802886174, 6629901197, 54739811878, 451976078779, 3731849749697, 30812948919061, 254414847888742, 2100639733295629, 17344457600010491, 143208852222784259]

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

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