A037891 a(n)=(1/2)*Sum{|d(i)-e(i)|} where Sum{d(i)*5^i} is the base 5 representation of n and e(i) are the digits d(i) in reverse order.

0, 0, 0, 0, 1, 0, 1, 2, 3, 2, 1, 0, 1, 2, 3, 2, 1, 0, 1, 4, 3, 2, 1, 0, 1, 0, 1, 2, 3, 1, 0, 1, 2, 3, 1, 0, 1, 2, 3, 1, 0, 1, 2, 3, 1, 0, 1, 2, 3, 2, 1, 0, 1, 2, 2, 1, 0, 1, 2, 2, 1, 0, 1, 2, 2, 1, 0, 1, 2, 2, 1, 0, 1, 2, 3, 2, 1, 0, 1, 3, 2, 1, 0, 1, 3, 2, 1, 0, 1, 3

Offset

1,8

Links

Table of n, a(n) for n=1..90.

Crossrefs

Sequence in context: A165578 A020990 A260686 * A037899 A037837 A194526

Adjacent sequences: A037888 A037889 A037890 * A037892 A037893 A037894

Keyword

nonn,base

Author

Clark Kimberling

Status

approved