T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order.
A223149
T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =7a(5) =2a(6) =10a(7) =31a(8) =31a(9) =10a(10) =24a(11) =187a(12) =211a(13) =187a(14) =24a(15) =72a(16) =990a(17) =4065a(18) =4065a(19) =990a(20) =72a(21) =168a(22) =5721a(23) =23376a(24) =84196a(25) =23376a(26) =5721a(27) =168a(28) =664a(29) =32155
External references
- oeis: A223149