Number of base 21 circular n-digit numbers with adjacent digits differing by 7 or less.

A125433

Number of base 21 circular n-digit numbers with adjacent digits differing by 7 or less.

Terms

    a(0) =1a(1) =21a(2) =259a(3) =2709a(4) =32627a(5) =401401a(6) =5043115a(7) =64108009a(8) =821245795a(9) =10571373945a(10) =136492942139

External references