id:A157421 - OEIS Search Results

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a(0)=1. a(n) = the smallest integer coprime to a(n-1) and greater than n^2.

+0
4

1, 2, 5, 11, 17, 26, 37, 50, 67, 82, 101, 122, 145, 171, 197, 226, 257, 290, 327, 362, 401, 442, 485, 531, 577, 626, 677, 730, 787, 842, 901, 962, 1025, 1091, 1157, 1226, 1297, 1370, 1447, 1522, 1601, 1682, 1765, 1851, 1937, 2026, 2117, 2210, 2307, 2402, 2501 (list; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`a(7) = 50, and 8^2 is 64. So, for a(8) we want the smallest integer that is both coprime to 50 and is > 64. Checking: 65 is not coprime to 50. 66 is not coprime to 50. But 67 is coprime to 50, so a(8) = 67.`
	CROSSREFS	`Cf. A157419, A157420.` `Sequence in context: A086319 A053033 A115057 this_sequence A038390 A048210 A023222` `Adjacent sequences: A157418 A157419 A157420 this_sequence A157422 A157423 A157424`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Feb 28 2009`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jun 19 2009`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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