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.

A302634 Number of nX7 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 21
2 185
3 83
4 304
5 1734
6 6460
7 30216
8 144266
9 642553
10 2942184
11 13568813
12 61798208
13 282661567
14 1295223226
15 5921237836
16 27085485076
17 123955468089
18 567032990681
19 2594025218639
20 11868355270058
21 54296922715587
22 248403802340878

List of values

[21, 185, 83, 304, 1734, 6460, 30216, 144266, 642553, 2942184, 13568813, 61798208, 282661567, 1295223226, 5921237836, 27085485076, 123955468089, 567032990681, 2594025218639, 11868355270058, 54296922715587, 248403802340878]

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

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