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 A252073 Number of (n+2)X(6+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 or 4 1

%I

%S 1573,8352,60245,391934,2547765,16789564,110131513,722619033,

%T 4749948377,31181555206,204626875063,1343622742626,8822820748320,

%U 57923805951945,380282422081555,2496764092390189,16392666023439258,107625734028805523

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

%C Column 6 of A252075

%H R. H. Hardin, <a href="/A252073/b252073.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A252073/a252073.txt">Empirical recurrence of order 72</a>

%F Empirical recurrence of order 72 (see link above)

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 13 2014

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Last modified March 26 23:26 EDT 2023. Contains 361553 sequences. (Running on oeis4.)