3547348992

Appears in sequences

• Number of (n+1) X 4 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases.at n=16A206089
• a(n) is the least number k such that A377208(k) = n, or -1 if no such number exists.at n=12A377211