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.

A302633 Number of nX6 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 13
2 65
3 47
4 149
5 691
6 2262
7 8981
8 35772
9 135125
10 522265
11 2030558
12 7817366
13 30184397
14 116738915
15 450741840
16 1740832183
17 6725944705
18 25979920451
19 100351084472
20 387650634193
21 1497420252119
22 5784201010250
23 22343397443993
24 86308461484188

List of values

[13, 65, 47, 149, 691, 2262, 8981, 35772, 135125, 522265, 2030558, 7817366, 30184397, 116738915, 450741840, 1740832183, 6725944705, 25979920451, 100351084472, 387650634193, 1497420252119, 5784201010250, 22343397443993, 86308461484188]

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

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