T(n,k)=Number of (n+2)X(k+2) 0..5 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

A186180

T(n,k)=Number of (n+2)X(k+2) 0..5 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

Terms

    a(0) =520017a(1) =10084236a(2) =10084236a(3) =143369699a(4) =311128593a(5) =143369699a(6) =1662436696a(7) =6520730198a(8) =6520730198a(9) =1662436696a(10) =16382439469a(11) =105970767207a(12) =188034884094a(13) =105970767207a(14) =16382439469a(15) =140871930232

External references