Number of primitive (period n) n-bead necklace structures using an infinite alphabet.
A276547
Number of primitive (period n) n-bead necklace structures using an infinite alphabet.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =11a(5) =39a(6) =126a(7) =537a(8) =2358a(9) =11690a(10) =61689a(11) =351725a(12) =2126496a(13) =13639244a(14) =92197509a(15) =655035225a(16) =4874404107a(17) =37893368072a(18) =306986431846
External references
- oeis: A276547