A072685 - OEIS

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A072685

Positive integers whose English names contain a prime number of letters.

1, 2, 3, 6, 7, 8, 10, 15, 16, 23, 27, 28, 33, 37, 38, 40, 50, 60, 70, 74, 75, 79, 83, 87, 88, 93, 97, 98, 104, 105, 109, 111, 112, 120, 124, 125, 129, 130, 134, 135, 139, 143, 147, 148, 153, 157, 158, 163, 167, 168, 171, 172, 176, 180, 184, 185, 189, 190, 194, 195 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	EXAMPLE	`First value is 1 because 1 -> "ONE" -> 3 letters and 3 is prime. Numbers >100 use naming convention using "and": 199 -> "ONEHUNDREDANDNINETYNINE" -> 23 letters and 23 is prime.`
	CROSSREFS	`Sequence in context: A064528 A179794 A001162 * A119960 A015841 A175893` `Adjacent sequences: A072682 A072683 A072684 * A072686 A072687 A072688`
	KEYWORD	`easy,nonn,word`
	AUTHOR	`Mark Hudson (mrmarkhudson(AT)hotmail.com), Jul 02 2002`

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Last modified February 17 13:28 EST 2012. Contains 206031 sequences.