A109751 A self-describing sequence: there are a(n) even digits and a(n) odd digits in the interval ]0;a(n)+1[.

10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 12, 12, 14, 14, 16, 16, 18, 18, 21, 21, 21, 23, 23, 25, 25, 27, 27, 29, 29, 30, 32, 32, 34, 34, 36, 36, 38, 38, 41, 41, 41, 43, 43, 45, 45, 47, 47, 49, 49, 50, 52, 52, 54, 54, 56, 56, 58, 58, 61, 61, 61, 63, 63, 65, 65, 67, 67, 69, 69

Offset

1,1

Links

Table of n, a(n) for n=1..69.

Example

Pick the first "10" of the sequence; there are 10 even digits and 10 odd digits in the interval ]0;11[ --> 10 times "0" and 10 times "1".
Take "30"; there are 30 even digits and 30 odd digits in the interval ]0;31[, etc.

Crossrefs

Sequence in context: A163139 A269352 A010692 * A160941 A070565 A376257

Adjacent sequences: A109748 A109749 A109750 * A109752 A109753 A109754

Keyword

base,easy,nonn

Author

Eric Angelini, Aug 11 2005

Status

approved