T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing.

A205277

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing.

Terms

    a(0) =256a(1) =2504a(2) =2504a(3) =23244a(4) =87912a(5) =23244a(6) =177050a(7) =2940732a(8) =2940732a(9) =177050a(10) =1284356a(11) =77255835a(12) =390106512a(13) =77255835a(14) =1284356a(15) =8458978a(16) =1905682493a(17) =39435964246a(18) =39435964246a(19) =1905682493a(20) =8458978a(21) =53679123a(22) =40440032498

External references