Number of base 26 circular n-digit numbers with adjacent digits differing by 1 or less.

A124719

Number of base 26 circular n-digit numbers with adjacent digits differing by 1 or less.

Terms

    a(0) =1a(1) =26a(2) =76a(3) =176a(4) =472a(5) =1256a(6) =3442a(7) =9518a(8) =26608a(9) =74912a(10) =212206a(11) =604058a(12) =1726582a(13) =4952246a(14) =14246644a(15) =41090936a(16) =118785568a(17) =344073056a(18) =998415598a(19) =2901784298a(20) =8445850762a(21) =24614293082a(22) =71820129424a(23) =209785569908a(24) =613390314046

External references