T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that b(i,j)*b(i-1,j)-c(i,j)*c(i,j-1) is nonzero.
A204106
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that b(i,j)*b(i-1,j)-c(i,j)*c(i,j-1) is nonzero.
Terms
- a(0) =36a(1) =144a(2) =144a(3) =576a(4) =864a(5) =576a(6) =2304a(7) =5184a(8) =5184a(9) =2304a(10) =9216a(11) =31104a(12) =46656a(13) =31104a(14) =9216a(15) =36864a(16) =186624a(17) =419904a(18) =419904a(19) =186624a(20) =36864a(21) =147456a(22) =1119744a(23) =3779136a(24) =5738688a(25) =3779136a(26) =1119744a(27) =147456a(28) =589824a(29) =6718464
External references
- oeis: A204106