47665

Appears in sequences

• Numbers k such that 7*4^k + 1 is prime.at n=28A002255
• The number of distinct positions on an infinite chessboard reachable by the (2,3)-leaper (or zebra) in at most n moves.at n=38A297740
• Triangle read by rows: T(n,k) = n! * coefficient of m^k in the polynomial counting labeled digraphs with m nodes and n arcs and without directed paths of length >= 2, with 0 <= k <= 2*n.at n=44A387663