A179987 Digital sums of A108971.

1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 2, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 9, 10, 11, 10, 9, 8, 7, 6, 5, 4, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 11, 12, 13, 12, 11, 10, 9, 8, 7, 6, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 13, 14, 15, 14, 13, 12, 11, 10, 9, 8, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 15, 16

Offset

1,2

Comments

a(n) = A007953(A108971(n));

ABS(a(n+1) - a(n)) = 1 by definition of A108971;

a(A179988(n)) = n and a(m) <> n for m < A179988(n).

Links

R. Zumkeller, Table of n, a(n) for n = 1..10000

Crossrefs

Sequence in context: A213652 A262734 A287794 * A073796 A017894 A291571

Adjacent sequences: A179984 A179985 A179986 * A179988 A179989 A179990

Keyword

base,nonn

Author

Reinhard Zumkeller, Aug 09 2010

Status

approved