330644

Appears in sequences

• Number of planar n X n X n binary triangular grids with no more than 2 ones in any 2 X 2 X 2 subtriangle.at n=6A153522
• Number of (n+2) X 4 0..1 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly one way, and new values 0..1 introduced in row major order.at n=9A204486