1857283156

Appears in sequences

• Definition (1): Number of n-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed.at n=37A000013
• Bisection of A000016 (also of A000013).at n=18A026119
• Number of solutions to 1 +- 2 +- 3 +- ... +- n == 0 (mod n).at n=36A300190
• Number of solutions to 1 +- 3 +- 5 +- ... +- (2*n-1) == 0 mod n.at n=36A300218