Search: id:A156523
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%I A156523
%S A156523 2,2,80,404,63392,1572582,1619260788,75946691122
%N A156523 Number of nXn arrays of squares of integers, symmetric about both diagonal 
               and antidiagonal, with all rows summing to 68.
%Y A156523 Sequence in context: A037292 A028372 A130678 this_sequence A156511 A133295 
               A055470
%Y A156523 Adjacent sequences: A156520 A156521 A156522 this_sequence A156524 A156525 
               A156526
%K A156523 nonn
%O A156523 2,1
%A A156523 Ron Hardin (rhhardin(AT)att.net) Feb 09 2009

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