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A205960 Smallest odd number with digit sum equal to n. 1
1, 11, 3, 13, 5, 15, 7, 17, 9, 19, 29, 39, 49, 59, 69, 79, 89, 99, 199, 299, 399, 499, 599, 699, 799, 899, 999, 1999, 2999, 3999, 4999, 5999, 6999, 7999, 8999, 9999, 19999, 29999, 39999, 49999, 59999, 69999, 79999, 89999, 99999, 199999, 299999, 399999, 499999 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Except for a(2), a(4), a(6) and a(8), the same as A051885 (n>0).

LINKS

Arkadiusz Wesolowski, Table of n, a(n) for n = 1..1000

FORMULA

a(n+1) = A069532(n) + 1.

MATHEMATICA

e = 5; Join[Table[l = 1; While[True, a = 2*l - 1; If[Total[IntegerDigits[a]] == n, Break[]]; l++]; a, {n, 8}], Flatten[Table[i*10^j - 1, {j, e}, {i, 9}]]]

With[{ds=Table[{n, Total[IntegerDigits[n]]}, {n, 1, 600001, 2}]}, Table[ SelectFirst[ ds, #[[2]]==k&], {k, 50}]][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Apr 30 2018 *)

CROSSREFS

Sequence in context: A261411 A067063 A075023 * A302556 A088262 A110406

Adjacent sequences:  A205957 A205958 A205959 * A205961 A205962 A205963

KEYWORD

base,easy,nonn

AUTHOR

Arkadiusz Wesolowski, Feb 02 2012

STATUS

approved

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Last modified July 22 02:02 EDT 2019. Contains 325210 sequences. (Running on oeis4.)