A316988 The odd members of the "Almost natural numbers" (A007376).

1, 3, 5, 7, 9, 1, 1, 1, 1, 1, 3, 1, 1, 5, 1, 1, 7, 1, 1, 9, 1, 3, 5, 7, 9, 3, 3, 1, 3, 3, 3, 3, 3, 5, 3, 3, 7, 3, 3, 9, 1, 3, 5, 7, 9, 5, 5, 1, 5, 5, 3, 5, 5, 5, 5, 5, 7, 5, 5, 9, 1, 3, 5, 7, 9, 7, 7, 1, 7, 7, 3, 7, 7, 5, 7, 7, 7, 7, 7, 9, 1, 3, 5, 7, 9, 9, 9, 1, 9, 9, 3, 9, 9, 5, 9, 9, 7, 9, 9, 9, 1

Offset

1,2

Comments

Also odd members of A033307.

As the number of terms approaches infinity, each odd term appears equally often. - Robert G. Wilson v, Aug 01 2018

Links

Table of n, a(n) for n=1..101.

Example

The initial (15) terms of A007376 are 1,2,3,4,5,6,7,8,9,1,0,1,1,1,2; omitting the even terms 2,4,6,8,0,2 leaves the first (8) odd terms 1,3,5,7,9,1,1,1: a(1) through a(8).

Mathematica

Select[ Flatten[ IntegerDigits /@ Range@100], OddQ] (* Robert G. Wilson v, Aug 01 2018 *)

Prog

(PARI) search(n) = for(k=1, n, my(d=select(x->x%2, digits(k))); for(m=1, #d, print1(d[m], ", ")))
/* Call the function as follows to generate terms */
search(40) \\ Felix Fröhlich, Aug 01 2018

Crossrefs

Cf. A007376, A033307.

Sequence in context: A249439 A276693 A127050 * A031312 A141518 A225985

Adjacent sequences: A316985 A316986 A316987 * A316989 A316990 A316991

Keyword

nonn

Author

Dave Durgin, Jul 18 2018

Status

approved