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.

A207996 Number of nX7 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).

Table of values

n a(n)
1 32
2 729
3 17749
4 441090
5 11045757
6 277458045
7 6978332618
8 175605187731
9 4419979346851
10 111261280858024
11 2800819361992659
12 70507189155056781
13 1774944424628356230
14 44682493917576202087
15 1124839588414204665607

List of values

[32, 729, 17749, 441090, 11045757, 277458045, 6978332618, 175605187731, 4419979346851, 111261280858024, 2800819361992659, 70507189155056781, 1774944424628356230, 44682493917576202087, 1124839588414204665607]

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

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