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A251776 Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum 3 or 6 and every diagonal and antidiagonal sum not 3 or 6 1

%I #4 Dec 08 2014 10:14:32

%S 12302,132886,748002,3849230,39849294,247384810,1341002006,

%T 13904412166,89606678130,502599987230,5191270921942,34184978268610,

%U 195126150915998,2011358635641966,13392105172319778,77114269192360262,794082619711670574

%N Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum 3 or 6 and every diagonal and antidiagonal sum not 3 or 6

%C Column 5 of A251779

%H R. H. Hardin, <a href="/A251776/b251776.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A251776/a251776.txt">Empirical recurrence of order 85</a>

%F Empirical recurrence of order 85 (see link above)

%e Some solutions for n=2

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 08 2014

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Last modified April 18 15:48 EDT 2024. Contains 371780 sequences. (Running on oeis4.)