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A045495 Smallest positive integer requiring at least n letters (not including hyphens) to be spelled out in English. 6
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified March 22 12:23 EDT 2019. Contains 321421 sequences. (Running on oeis4.)