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.

A208407 Number of nX7 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

n a(n)
1 715
2 10370330
3 157873031498
4 2403711876698218
5 36598079445605633928
6 557229580446475130201608
7 8484183047877022205116428184
8 129177209027669581083328287797640
9 1966807085374417176424317546443585928

List of values

[715, 10370330, 157873031498, 2403711876698218, 36598079445605633928, 557229580446475130201608, 8484183047877022205116428184, 129177209027669581083328287797640, 1966807085374417176424317546443585928]

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

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