id:A088123 - OEIS Search Results

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Let f(n,x) = 1 + 2x + 3x^2 + 5x^3 + 7x^4 + ... + prime(n)*x^n; a(n)= smallest value of x such that f(n,x) is a prime, or 0 if no such prime exists.

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1, 2, 1, 6, 1, 6, 1, 8, 1, 74, 6, 6, 1, 2, 11, 102, 20, 88, 1, 52, 10, 18, 2, 56, 1, 26, 37, 216, 1, 78, 1, 28, 21, 160, 3, 276, 30, 1542, 42, 598, 20, 20, 333, 186, 8, 82, 11, 90, 1, 246, 1, 240, 83, 58, 9, 76, 1, 16, 21, 700, 60, 10, 87, 250, 62, 406, 2, 502, 140, 186, 1293, 578 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`a(4) = 6 as, A088122(4) = 10273= f(4,6).`
	CROSSREFS	`Cf. A088122.` `Sequence in context: A085099 A154744 A048671 this_sequence A050932 A166120 A007956` `Adjacent sequences: A088120 A088121 A088122 this_sequence A088124 A088125 A088126`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 25 2003`
	EXTENSIONS	`More terms from Tom Mueller (muel4503(AT)uni-trier.de), May 04 2004` `More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jul 25 2005`

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Last modified November 23 10:40 EST 2009. Contains 167421 sequences.

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