49273

Appears in sequences

• 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 21.at n=12A159222
• 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 27.at n=12A159227
• Number of aperiodic necklaces (Lyndon words) with k<=6 black beads and n-k white beads.at n=34A277631