A045494 Smallest positive integer requiring at least n letters (not including hyphens) when spelled out in English.

1, 1, 1, 3, 3, 11, 13, 13, 17, 23, 23, 73, 101, 103, 103, 111, 113, 113, 117, 123, 123, 173, 323, 373, 1103, 1103, 1111, 1113, 1113, 1117, 1123, 1123, 1173, 1323, 1373, 3323, 3373, 11373, 13323, 13373, 17373, 23323, 23373, 73373, 101373, 103323

Offset

1,4

Comments

Assumes British definition of billion, trillion. Also assumes no 'and' is used to spell integers.

Links

Table of n, a(n) for n=1..46.

Crossrefs

Cf. A000916, A001166, A014388, A045494, A045495, A045495, A167509.

Sequence in context: A230011 A136123 A045495 * A217712 A321678 A027416

Adjacent sequences: A045491 A045492 A045493 * A045495 A045496 A045497

Keyword

nonn,word

Author

Brian Galebach

Extensions

Added "at least" in definition M. F. Hasler, Nov 18 2009

Status

approved