A080751 a(n) is smallest number greater than a(n-1) such that the sequence contains a total of a(n) base 10 digits + commas through n terms (assuming one comma between each pair of terms).

1, 3, 5, 7, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99, 103, 107, 111, 115, 119, 123, 127, 131, 135, 139, 143, 147, 151, 155, 159, 163, 167, 171, 175, 179, 183, 187, 191, 195, 199, 203, 207

Offset

1,2

Comments

The comma after a term is not counted as part of that term.

Links

Table of n, a(n) for n=1..62.

Example

a(1)=1, the only possible initial term in base 10. a(5)=9, the smallest possible number (the other candidate is 10) such that the sequence after 5 terms would contain a(n) base 10 digits + commas.

Crossrefs

Cf. A080676.

Sequence in context: A309269 A362135 A204206 * A025218 A258782 A349993

Adjacent sequences: A080748 A080749 A080750 * A080752 A080753 A080754

Keyword

base,easy,nonn

Author

Matthew Vandermast, Mar 08 2003

Status

approved