A045495 Smallest positive integer requiring at least n letters (not including hyphens) to be spelled out in English.

1, 1, 1, 3, 3, 11, 13, 13, 17, 23, 23, 73, 101, 101, 101, 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, 101123

Offset

1,4

Comments

Assumes British definition of billion trillion. Also assumes 'and' is used in numbers such as 'one hundred and one'.

Links

Table of n, a(n) for n=1..48.

Crossrefs

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

Sequence in context: A122573 A230011 A136123 * A045494 A217712 A321678

Adjacent sequences: A045492 A045493 A045494 * A045496 A045497 A045498

Keyword

nonn,word

Author

Brian Galebach

Extensions

Added "at least" in definition, and a cross-reference M. F. Hasler, Nov 18 2009

Status

approved