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A119960 Positive integers with prime number of characters in their English names, including spaces and hyphens. 1
1, 2, 3, 6, 7, 8, 10, 15, 16, 24, 25, 29, 34, 35, 39, 40, 43, 47, 48, 50, 53, 57, 58, 60, 63, 67, 68, 70, 71, 72, 73, 76, 77, 78, 84, 85, 89, 94, 95, 99 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Differs due to hyphens and spaces from A072685 Positive integers whose English names contain a prime number of letters. Primes with prime number of characters in their English names, including spaces and hyphens, are a subset of this beginning: 2, 3, 7, 29, 43, 47, 53, 67, 71, 73.

LINKS

Table of n, a(n) for n=1..40.

FORMULA

n such that A052360(n) is prime. n such that A052360(n) is in A000040.

MATHEMATICA

Select[Range[99], PrimeQ[ StringLength@ IntegerName[#, "Words"]] &] (* Giovanni Resta, Jun 13 2016 *)

CROSSREFS

Cf. A000040, A052360, A005589, A052362-A052363, A072685.

Sequence in context: A221977 A001162 A072685 * A273265 A015841 A175893

Adjacent sequences:  A119957 A119958 A119959 * A119961 A119962 A119963

KEYWORD

easy,nonn,word

AUTHOR

Jonathan Vos Post, Aug 02 2006

EXTENSIONS

Missing a(1) and more terms from Giovanni Resta, Jun 13 2016

STATUS

approved

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Last modified October 23 21:27 EDT 2021. Contains 348217 sequences. (Running on oeis4.)