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.

A262423 Number of (4+1)X(n+1) 0..1 arrays with each row divisible by 3 and column not divisible by 3, read as a binary number with top and left being the most significant bits.

Table of values

n a(n)
1 21
2 48
3 1701
4 18228
5 428301
6 7577424
7 163388421
8 3287265300
9 69481709901
10 1443547193328
11 30363542104581
12 635919555126708
13 13359727300650381
14 280364385485387664
15 5888252348126720901
16 123632237885054793300

List of values

[21, 48, 1701, 18228, 428301, 7577424, 163388421, 3287265300, 69481709901, 1443547193328, 30363542104581, 635919555126708, 13359727300650381, 280364385485387664, 5888252348126720901, 123632237885054793300]

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

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