147505

Appears in sequences

• Number of distinct lines through the origin in 4-dimensional cube of side length n.at n=19A090026
• Number of (n+1) X (3+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=14A253430
• E.g.f. satisfies A(x) = exp(x) + x^2*A(x)^2.at n=7A371319