Number of base 25 n-digit numbers with adjacent digits differing by one or less.

A126379

Number of base 25 n-digit numbers with adjacent digits differing by one or less.

Terms

    a(0) =1a(1) =25a(2) =73a(3) =215a(4) =635a(5) =1879a(6) =5567a(7) =16509a(8) =48993a(9) =145479a(10) =432191a(11) =1284481a(12) =3818837a(13) =11357069a(14) =33784477a(15) =100524263a(16) =299168955a(17) =890522631a(18) =2651236335a(19) =7894421265a(20) =23510114133a(21) =70023966177a(22) =208589168433a(23) =621421019043

External references