Number of primitive (aperiodic) reversible strings with n beads using a maximum of five different colors.
A056316
Number of primitive (aperiodic) reversible strings with n beads using a maximum of five different colors.
Terms
- a(0) =5a(1) =10a(2) =70a(3) =310a(4) =1620a(5) =7790a(6) =39370a(7) =195300a(8) =978050a(9) =4882740a(10) =24421870a(11) =122069940a(12) =610390620a(13) =3051757490a(14) =15258982680a(15) =76293945000a(16) =381470703120
External references
- oeis: A056316