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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.

A216759 Number of horizontal, vertical, diagonal, antidiagonal or knight-move neighbor colorings of an nX4 array with new integer colors introduced in row major order.

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%I A216759 #5 Jul 22 2025 23:35:09
%S A216759 5,34,2957,1340534,1842474893
%N A216759 Number of horizontal, vertical, diagonal, antidiagonal or knight-move neighbor colorings of an nX4 array with new integer colors introduced in row major order.
%C A216759 Column 4 of A216760
%e A216759 Some solutions for n=3
%e A216759 ..0..3..2..0....0..3..2..5....0..3..6..5....0..2..0..2....0..3..5..1
%e A216759 ..1..4..1..6....1..4..1..6....1..4..7..4....1..3..1..3....1..4..6..2
%e A216759 ..2..3..5..7....2..3..0..7....2..5..0..3....0..4..0..2....2..3..7..8
%K A216759 nonn
%O A216759 1,1
%A A216759 _R. H. Hardin_ Sep 15 2012

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