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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.

A218050 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random 0..3 n X n array.

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%I A218050 #7 Mar 10 2023 13:44:40
%S A218050 4,4,256,9792,2585920,1673074136,4273380556408,34255740119092068
%N A218050 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random 0..3 n X n array.
%C A218050 Diagonal of A218056.
%e A218050 Some solutions for n=3
%e A218050 ..2..0..0....1..1..3....1..1..3....2..1..1....3..3..3....0..0..2....1..1..2
%e A218050 ..2..0..0....1..1..1....1..1..2....1..1..1....2..2..2....0..0..1....0..0..2
%e A218050 ..2..2..2....3..1..1....3..2..2....1..1..2....2..2..2....2..1..1....0..0..3
%Y A218050 Cf. A218056.
%K A218050 nonn
%O A218050 1,1
%A A218050 _R. H. Hardin_, Oct 19 2012

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