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A254808 Number of (5+2) X (n+2) 0..1 arrays with every 3 X 3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally. 1

%I #6 Apr 16 2024 21:54:28

%S 178752,479464,1200192,3369689,11392932,36042356,105040512,290370835,

%T 772044120,2117387624,5674362710,15790193498,43125762638,123241759098,

%U 352132541188,1030454500599,3001800742468,8850561724548,26119976736578

%N Number of (5+2) X (n+2) 0..1 arrays with every 3 X 3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

%C Row 5 of A254804.

%H R. H. Hardin, <a href="/A254808/b254808.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

%e ..0..0..1....0..0..0....0..0..1....0..0..1....0..0..1....0..0..1....0..0..1

%e ..1..0..1....0..1..0....1..1..1....1..1..1....0..1..0....1..0..0....1..1..1

%e ..1..0..1....1..0..0....0..0..0....1..0..0....1..1..0....1..0..1....1..1..1

%e ..1..1..0....1..0..1....1..1..0....1..1..0....0..0..0....1..0..0....0..1..0

%e ..1..0..0....0..0..0....1..0..0....1..1..0....1..1..0....0..0..0....1..0..0

%e ..1..1..0....0..0..0....0..0..1....1..1..1....1..0..1....1..1..0....1..0..1

%e ..0..1..1....0..1..1....0..0..1....0..0..1....1..0..1....0..1..0....0..0..0

%Y Cf. A254804.

%K nonn,changed

%O 1,1

%A _R. H. Hardin_, Feb 08 2015

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Last modified April 20 11:40 EDT 2024. Contains 371838 sequences. (Running on oeis4.)