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A251919 Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum 2 4 5 or 7 and every diagonal and antidiagonal sum not 2 4 5 or 7 1

%I

%S 3260,4938,10820,25882,80438,253148,856022,3063064,10885914,39035588,

%T 141641316,513510222,1860892000,6752701006,24520021374,89037718964,

%U 323273690688,1173779249448,4262540743302,15479263400324,56209300530872

%N Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum 2 4 5 or 7 and every diagonal and antidiagonal sum not 2 4 5 or 7

%C Column 4 of A251923

%H R. H. Hardin, <a href="/A251919/b251919.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A251919/a251919.txt">Empirical recurrence of order 69</a>

%F Empirical recurrence of order 69 (see link above)

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 11 2014

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Last modified December 3 07:52 EST 2022. Contains 358512 sequences. (Running on oeis4.)