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Indices of prime Knuth numbers; that is, integers n such that the n-th Knuth number is prime. Indices of primes in A007448.

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1, 2, 4, 5, 6, 10, 11, 12, 15, 16, 17, 18, 28, 29, 30, 40, 41, 42, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 121, 122, 123, 124, 125, 126, 136, 137, 138, 159, 160, 161, 162, 190, 191, 192, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Eric Weisstein's World of Mathematics, Knuth Number.`
	EXAMPLE	`10 is a term because the 10th Knuth number, 13, is prime.`
	CROSSREFS	`Cf. A007448.` `Sequence in context: A077312 A140779 A117890 this_sequence A047433 A029465 A014871` `Adjacent sequences: A108850 A108851 A108852 this_sequence A108854 A108855 A108856`
	KEYWORD	`easy,nonn`
	AUTHOR	`Ryan Propper (rpropper(AT)stanford.edu), Jul 11 2005`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 24 2005`

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

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