A362442 a(1) = 6; thereafter a(n) = smallest number with a(n-1) letters in American English.

6, 11, 23, 323, 1103323373373373373373373373373

Offset

1,1

Comments

a(5) should be findable, but a(6) will probably not be well defined.

See A362441 for a British English version.

References

GCHQ, The GCHQ Puzzle Book, Penguin, 2016. See pages 92 and 275.

Links

Table of n, a(n) for n=1..5.

Formula

a(n) = A080777(a(n-1)) for n > 1. - Michael S. Branicky, Apr 22 2023

Example

a(2) = 11 since "eleven" is the smallest number with 6 letters.
a(3) = 23 since "twenty three" is the smallest with 11 letters.

Crossrefs

Cf. A005589, A362123, A362441.

Sequence in context: A220154 A362441 A309742 * A372999 A063629 A076496

Adjacent sequences: A362439 A362440 A362441 * A362443 A362444 A362445

Keyword

nonn,word,more

Author

N. J. A. Sloane, Apr 22 2023

Extensions

a(5) from Michael S. Branicky, Apr 22 2023 using A080777

Status

approved