T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally, vertically or nw-to-se diagonally exactly one way.

A204607

T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally, vertically or nw-to-se diagonally exactly one way.

Terms

    a(0) =3562a(1) =29678a(2) =29678a(3) =328845a(4) =144168a(5) =328845a(6) =2275645a(7) =741296a(8) =741296a(9) =2275645a(10) =16247580a(11) =4820300a(12) =981914a(13) =4820300a(14) =16247580a(15) =153711850a(16) =40672735a(17) =5260434a(18) =5260434a(19) =40672735a(20) =153711850a(21) =1240455298a(22) =304865717a(23) =43980907a(24) =10978524

External references