Triangle read by rows: T(n,k) = number of primitive (aperiodic) reversible string structures with n beads using exactly k different colors.
A276544
Triangle read by rows: T(n,k) = number of primitive (aperiodic) reversible string structures with n beads using exactly k different colors.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =2a(5) =1a(6) =0a(7) =4a(8) =4a(9) =1a(10) =0a(11) =9a(12) =15a(13) =6a(14) =1a(15) =0a(16) =16a(17) =49a(18) =37a(19) =9a(20) =1a(21) =0a(22) =35a(23) =160a(24) =183a(25) =76a(26) =12a(27) =1a(28) =0a(29) =66
External references
- oeis: A276544