Number of base 15 circular n-digit numbers with adjacent digits differing by 1 or less.

A124708

Number of base 15 circular n-digit numbers with adjacent digits differing by 1 or less.

Terms

    a(0) =1a(1) =15a(2) =43a(3) =99a(4) =263a(5) =695a(6) =1891a(7) =5195a(8) =14431a(9) =40383a(10) =113723a(11) =321875a(12) =914903a(13) =2609895a(14) =7468147a(15) =21427259a(16) =61622671a(17) =177588815a(18) =512734699a(19) =1482818915a(20) =4294677703a(21) =12455435063a(22) =36167638627a(23) =105140060555a(24) =305958613855a(25) =891185076095

External references