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Number of (n+2)X(6+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 or 4
1

%I #4 Dec 13 2014 20:52:05

%S 3650,19910,132875,846257,5474209,35987921,235656844,1544714826,

%T 10150201969,66639770473,437387173890,2872281321064,18863676200386,

%U 123871142611349,813420551223553,5341683597446143,35078666125500642

%N Number of (n+2)X(6+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 or 4

%C Column 6 of A252088

%H R. H. Hardin, <a href="/A252086/b252086.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

%e ..0..0..2..0..0..0..0..0....2..2..2..1..2..2..2..2....2..0..0..0..0..0..2..0

%e ..2..0..0..0..0..0..0..2....2..2..2..2..2..2..2..2....0..0..0..0..0..0..0..0

%e ..0..0..0..0..0..0..0..0....1..2..2..2..2..2..2..1....0..0..0..0..0..0..0..0

%e ..0..0..0..0..0..0..2..0....2..2..2..2..2..2..2..2....0..0..0..0..0..0..0..0

%e ..0..0..0..0..0..0..0..0....2..1..2..2..2..2..2..2....0..0..2..0..0..0..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 13 2014

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Last modified September 21 19:38 EDT 2024. Contains 376089 sequences. (Running on oeis4.)