id:A108399 - OEIS Search Results

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Least positive k such that n^2 + k is a golden semiprime (A108540).

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5, 2, 6, 61, 52, 41, 28, 13, 106, 87, 66, 43, 18, 393, 364, 333, 300, 265, 228, 189, 148, 105, 60, 13, 226, 175, 122, 67, 10, 463, 402, 339, 274, 207, 138, 67, 814, 739, 662, 583, 502, 419, 334, 247, 158, 67, 538, 443, 346, 247, 146, 43, 4494, 4387, 4278, 4167, 4054 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Conjecture: for every n > 1 there exists a number k < n^3 such that n^2 + k is a golden semiprime.`
	EXAMPLE	`a(4)=61 because 4^2+61 = 77 = 711 and 7phi-11 = 0.326237... < 1.`
	CROSSREFS	`Cf. A108540.` `Sequence in context: A054400 A035568 A091660 this_sequence A094772 A093591 A132800` `Adjacent sequences: A108396 A108397 A108398 this_sequence A108400 A108401 A108402`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jul 03 2005`

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

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