177073

Appears in sequences

• Number of binary arrangements without adjacent 1's on n X n array connected ne-sw and nw-se.at n=4A067965
• Number of n X 5 binary matrices with no two 1's adjacent diagonally or antidiagonally.at n=4A181209
• T(n,k)=Number of nXk binary matrices with no two 1's adjacent diagonally or antidiagonally.at n=40A181212