Number of necklaces with n white beads and 9*n black beads.
A261503
Number of necklaces with n white beads and 9*n black beads.
Terms
- a(0) =1a(1) =1a(2) =10a(3) =136a(4) =2290a(5) =42376a(6) =834472a(7) =17125354a(8) =362345362a(9) =7847250409a(10) =173103115760
External references
- oeis: A261503