id:A089339 - OEIS Search Results

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Number of primes beginning with n and of the form n concatenated with p where p takes all the prime values less than n.

+0
2

0, 0, 0, 1, 1, 0, 1, 1, 1, 2, 1, 1, 1, 0, 2, 3, 1, 1, 3, 2, 2, 3, 2, 3, 1, 2, 4, 2, 2, 4, 3, 2, 6, 2, 4, 5, 2, 2, 7, 2, 2, 6, 2, 3, 5, 4, 2, 4, 4, 3, 3, 3, 2, 8, 3, 5, 6, 3, 3, 7, 5, 4, 9, 2, 4, 5, 5, 4, 6, 3, 2, 9, 2, 4, 10, 2, 6, 8, 3, 4, 8, 7, 4, 8, 6, 5, 11, 7, 4, 8, 3, 2, 8, 9, 3, 10, 4, 7, 7, 4, 4, 11, 5 (list; graph; listen)

	OFFSET	`1,10`
	COMMENT	`Conjecture: There are finitely many zeros in this sequence. What is the largest value of n such that a(n) = 0? Perhaps n = 14.`
	EXAMPLE	`a(10) = 2 and 103 and 107 are the associated primes.`
	CROSSREFS	`Cf. A089340.` `Sequence in context: A064272 A117479 A118404 this_sequence A127284 A120691 A111941` `Adjacent sequences: A089336 A089337 A089338 this_sequence A089340 A089341 A089342`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 04 2003`
	EXTENSIONS	`Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 07 2003`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

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