Numbers of nonisomorphic systems of catafusenes (see Cyvin et al. (1994) for precise definition).
A045906
Numbers of nonisomorphic systems of catafusenes (see Cyvin et al. (1994) for precise definition).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =12a(4) =51a(5) =205a(6) =907a(7) =4000a(8) =18048a(9) =81719a(10) =373104a(11) =1710740a(12) =7882346a(13) =36457711a(14) =169252176a(15) =788326910a(16) =3683071949a(17) =17255713627a(18) =81056265252a(19) =381668770108
External references
- oeis: A045906