T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in all its horizontal and vertical neighbors.
A205422
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in all its horizontal and vertical neighbors.
Terms
- a(0) =256a(1) =2768a(2) =2768a(3) =31216a(4) =62716a(5) =31216a(6) =345008a(7) =1448498a(8) =1448498a(9) =345008a(10) =3855292a(11) =33701202a(12) =74565586a(13) =33701202a(14) =3855292a(15) =42869296a(16) =782598960a(17) =3739413082a(18) =3739413082a(19) =782598960a(20) =42869296a(21) =477932092a(22) =18167227774a(23) =189526149374
External references
- oeis: A205422