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A252029 Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 or 4 1

%I #4 Dec 12 2014 17:15:14

%S 1805,5285,24664,126920,672903,3560831,18791972,99214423,524431707,

%T 2773560231,14668200861,77569992820,410248950984,2169924794189,

%U 11477536641401,60707460691069,321095432494659,1698369603182256

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

%C Column 5 of A252032

%H R. H. Hardin, <a href="/A252029/b252029.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A252029/a252029.txt">Empirical recurrence of order 83</a>

%F Empirical recurrence of order 83 (see link above)

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 12 2014

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)