A179085 Odd numbers having an odd sum of digits in their decimal representation.

1, 3, 5, 7, 9, 21, 23, 25, 27, 29, 41, 43, 45, 47, 49, 61, 63, 65, 67, 69, 81, 83, 85, 87, 89, 111, 113, 115, 117, 119, 131, 133, 135, 137, 139, 151, 153, 155, 157, 159, 171, 173, 175, 177, 179, 191, 193, 195, 197, 199, 201, 203, 205, 207, 209, 221, 223, 225, 227

Offset

1,2

Comments

a(n) = A030142(n) for n <= 25;

intersection of A005408 and A054684: A000035(a(n))*A179081(a(n))=1;

complement of A179084 with respect to A005408;

complement of A179083 with respect to A054684;

a(n) mod 2 = 1 and A007953(a(n)) mod 2 = 1.

Links

R. Zumkeller, Table of n, a(n) for n = 1..1000

Index entries for 10-automatic sequences.

Index entries for Colombian or self numbers and related sequences

Mathematica

Select[Range[1, 227, 2], OddQ[Total[IntegerDigits[#]]] &] (* Jayanta Basu, May 07 2013 *)

Crossrefs

Sequence in context: A003052 A003219 A030142 * A076185 A101813 A134719

Adjacent sequences: A179082 A179083 A179084 * A179086 A179087 A179088

Keyword

base,nonn,easy

Author

Reinhard Zumkeller, Jun 28 2010

Status

approved