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.

A262315 Number of (n+2)X(3+2) 0..1 arrays with each row and column divisible by 7, read as a binary number with top and left being the most significant bits.

Table of values

n a(n)
1 5
2 9
3 17
4 133
5 361
6 1009
7 8357
8 33993
9 127121
10 795013
11 3876585
12 16907121
13 90644645
14 463649609
15 2179845009
16 11046180229
17 56646588009
18 276046895345
19 1376462436005
20 7003379302345
21 34679915634321
22 172507268999557
23 871215356444137

List of values

[5, 9, 17, 133, 361, 1009, 8357, 33993, 127121, 795013, 3876585, 16907121, 90644645, 463649609, 2179845009, 11046180229, 56646588009, 276046895345, 1376462436005, 7003379302345, 34679915634321, 172507268999557, 871215356444137]

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

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