Number of base 21 circular n-digit numbers with adjacent digits differing by 8 or less.

A125456

Number of base 21 circular n-digit numbers with adjacent digits differing by 8 or less.

Terms

    a(0) =1a(1) =21a(2) =285a(3) =3333a(4) =44589a(5) =609441a(6) =8484027a(7) =119207781a(8) =1683956109a(9) =23857954869a(10) =338563579455

External references