id:A088125 - OEIS Search Results

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Let f(n,x) = 1 + 4x + 6x^2 + 8x^3 + 9x^4 + ... + composite(n)*x^n; a(n)= smallest x such that f(n,x) is a prime, or 0 if no such prime exists.

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1, 1, 1, 2, 6, 34, 2, 1, 3, 1, 11, 42, 120, 12, 8, 1, 4, 2, 24, 86, 1, 54, 154, 202, 246, 25, 10, 60, 1, 114, 34, 22, 21, 1, 88, 14, 276, 70, 795, 518, 448, 252, 6, 2, 1, 18, 768, 124, 1, 186, 143, 1, 138, 456, 366, 19, 47, 112, 336, 772, 140, 3, 88, 30, 188, 90, 437, 90, 294 (list; graph; listen)

	OFFSET	`1,4`
	CROSSREFS	`Cf. A088122, A088123, A088124.` `Sequence in context: A012874 A005161 A062970 this_sequence A064940 A105142 A026966` `Adjacent sequences: A088122 A088123 A088124 this_sequence A088126 A088127 A088128`
	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 December 1 13:27 EST 2009. Contains 167806 sequences.

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