Number of base 26 n-digit numbers with adjacent digits differing by four or less.
A126521
Number of base 26 n-digit numbers with adjacent digits differing by four or less.
Terms
- a(0) =1a(1) =26a(2) =214a(3) =1806a(4) =15374a(5) =131538a(6) =1128990a(7) =9710910a(8) =83652388a(9) =721363974a(10) =6225222156a(11) =53750847042a(12) =464278918952
External references
- oeis: A126521