Number of base 5 n-digit numbers with adjacent digits differing by two or less.

A126392

Number of base 5 n-digit numbers with adjacent digits differing by two or less.

Terms

    a(0) =1a(1) =5a(2) =19a(3) =75a(4) =295a(5) =1161a(6) =4569a(7) =17981a(8) =70763a(9) =278483a(10) =1095951a(11) =4313041a(12) =16973681a(13) =66798773a(14) =262882051a(15) =1034554523a(16) =4071419319a(17) =16022795225a(18) =63056626377a(19) =248155086189a(20) =976597549531

External references