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

A205235

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

Terms

    a(0) =56a(1) =266a(2) =266a(3) =1187a(4) =2773a(5) =1187a(6) =4584a(7) =27157a(8) =27157a(9) =4584a(10) =17010a(11) =221766a(12) =640652a(13) =221766a(14) =17010a(15) =58892a(16) =1707082a(17) =12273323a(18) =12273323a(19) =1707082a(20) =58892a(21) =198325a(22) =11675764a(23) =221519116a(24) =586841773a(25) =221519116a(26) =11675764a(27) =198325a(28) =642908a(29) =76088840

External references