Number of primitive (aperiodic) reversible strings with n beads using a maximum of six different colors.
A056317
Number of primitive (aperiodic) reversible strings with n beads using a maximum of six different colors.
Terms
- a(0) =6a(1) =15a(2) =120a(3) =645a(4) =3990a(5) =23295a(6) =140610a(7) =839790a(8) =5042610a(9) =30232965a(10) =181421850a(11) =1088390415a(12) =6530486970a(13) =39182081385a(14) =235093327980
External references
- oeis: A056317