401634

Appears in sequences

• Number of n-bead necklaces labeled with numbers -n..n allowing reversal, with sum zero and avoiding the patterns z z+1 z+2 and z z-1 z-2.at n=6A209477
• Number of n-bead necklaces labeled with numbers -7..7 allowing reversal, with sum zero and avoiding the patterns z z+1 z+2 and z z-1 z-2.at n=6A209484
• Number of 7-bead necklaces labeled with numbers -n..n allowing reversal, with sum zero and avoiding the patterns z z+1 z+2 and z z-1 z-2.at n=6A209488