Number of base 19 circular n-digit numbers with adjacent digits differing by 1 or less.

A124712

Number of base 19 circular n-digit numbers with adjacent digits differing by 1 or less.

Terms

    a(0) =1a(1) =19a(2) =55a(3) =127a(4) =339a(5) =899a(6) =2455a(7) =6767a(8) =18859a(9) =52939a(10) =149535a(11) =424487a(12) =1210059a(13) =3461659a(14) =9933055a(15) =28577687a(16) =82409179a(17) =238128539a(18) =689345935a(19) =1998806327a(20) =5804195179a(21) =16876837979a(22) =49132180735a(23) =143192973047a(24) =417751959379

External references