a(n) = number of inequivalent necklaces with beads labeled 1/i (1 <= i <= n) such that the sum of the beads is 1 and the smallest bead is 1/n.
A259633
a(n) = number of inequivalent necklaces with beads labeled 1/i (1 <= i <= n) such that the sum of the beads is 1 and the smallest bead is 1/n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =12a(6) =1a(7) =43a(8) =132a(9) =547a(10) =1a(11) =7834a(12) =1a(13) =30442a(14) =608887a(15) =3834978a(16) =1a(17) =84536629a(18) =1a(19) =3030450058a(20) =79538220753a(21) =16701983083a(22) =1
External references
- oeis: A259633