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 A265972 Number of nX7 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique. 1

%I

%S 17012,953072,1282192,2263704,5120120,13435392,34825856,92019824,

%T 231761056,593080872,1481688160,3832636952,9840184608,25358167888,

%U 64217497384,165719314208,425547780616,1093883487608,2780744054920

%N Number of nX7 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique.

%C Column 7 of A265973.

%H R. H. Hardin, <a href="/A265972/b265972.txt">Table of n, a(n) for n = 1..160</a>

%e Some solutions for n=1

%e ..3..3..1..2..2..3..1....0..4..1..0..0..4..4....0..2..2..0..3..3..4

%Y Cf. A265973.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 19 2015

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Last modified December 7 22:22 EST 2021. Contains 349589 sequences. (Running on oeis4.)