1290874

Appears in sequences

• Number of imprimitive (periodic) n-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed.at n=52A115118
• Least nonnegative number whose n-th arithmetic derivative (A003415) is zero and lower derivatives are nonzero.at n=22A189760
• Positions of records in A327966.at n=22A327967