Number of base 9 circular n-digit numbers with adjacent digits differing by 2 or less.
A124851
Number of base 9 circular n-digit numbers with adjacent digits differing by 2 or less.
Terms
- a(0) =1a(1) =9a(2) =39a(3) =141a(4) =587a(5) =2479a(6) =10731a(7) =47063a(8) =208547a(9) =931047a(10) =4180239a(11) =18849103a(12) =85269011a(13) =386687375a(14) =1756855951a(15) =7993210831a(16) =36405316227a(17) =165940691695a(18) =756832203759
External references
- oeis: A124851