A179988 Smallest m such that n = sum of digits of A108971(m).

1, 2, 3, 4, 5, 6, 7, 8, 9, 26, 29, 46, 49, 66, 69, 86, 89, 176, 273, 376, 473, 576, 673, 776, 873, 976, 1773, 2776, 3773, 4776, 5773, 6776, 7773, 8776, 9773, 17776, 27773, 37776

Offset

1,2

Comments

A179987(a(n)) = n and A179987(m) <> n for m < a(n);

A108971(a(n)) = A051885(n+1);

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

conjecture for n>=18: a(n) = A051885(n+1) + 7*(10^floor(n/9) - 1)/9 - 3*(n mod 2).

Links

Table of n, a(n) for n=1..38.

Crossrefs

Sequence in context: A128606 A085123 A131571 * A364187 A179979 A256005

Adjacent sequences: A179985 A179986 A179987 * A179989 A179990 A179991

Keyword

base,nonn

Author

Reinhard Zumkeller, Aug 09 2010

Status

approved