Number of base 20 circular n-digit numbers with adjacent digits differing by 7 or less.

A125432

Number of base 20 circular n-digit numbers with adjacent digits differing by 7 or less.

Terms

    a(0) =1a(1) =20a(2) =244a(3) =2540a(4) =30372a(5) =371020a(6) =4624618a(7) =58276910a(8) =739421468a(9) =9420320720a(10) =120311299494

External references