Number of length n mixed-radix numbers with base [2, 3, 4, ...] (factorial base) such that the parities of adjacent digits differ.

A219024

Number of length n mixed-radix numbers with base [2, 3, 4, ...] (factorial base) such that the parities of adjacent digits differ.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =6a(4) =16a(5) =48a(6) =180a(7) =720a(8) =3456a(9) =17280a(10) =100800a(11) =604800a(12) =4147200a(13) =29030400a(14) =228614400a(15) =1828915200a(16) =16257024000a(17) =146313216000

External references