Number of base 9 n-digit numbers with adjacent digits differing by four or less.
A126504
Number of base 9 n-digit numbers with adjacent digits differing by four or less.
Terms
- a(0) =1a(1) =9a(2) =61a(3) =429a(4) =3011a(5) =21141a(6) =148433a(7) =1042167a(8) =7317185a(9) =51374875a(10) =360709449a(11) =2532586341a(12) =17781606753a(13) =124846894103a(14) =876565722303
External references
- oeis: A126504