Number of (n+2)X6 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly one way, and new values 0..1 introduced in row major order.

A204357

Number of (n+2)X6 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly one way, and new values 0..1 introduced in row major order.

Terms

    a(0) =2399a(1) =5812a(2) =13721a(3) =29977a(4) =71465a(5) =167480a(6) =383714a(7) =876140a(8) =2033788a(9) =4673032a(10) =10736162a(11) =24701276a(12) =57041826a(13) =131340438a(14) =302246188a(15) =695792018a(16) =1603376912a(17) =3692734666a(18) =8503229146a(19) =19580355046a(20) =45098375114a(21) =103863371934a(22) =239194175448

External references