id:A157450 - OEIS Search Results

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a(n) = the nth divisor of the smallest positive integer with exactly n^2 divisors.

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1, 2, 3, 4, 6, 6, 9, 8, 10, 10, 24, 12, 32, 16, 18, 18, 64, 21, 81, 22, 28, 32, 144, 27, 40, 42, 36, 35, 288, 39, 384, 39, 56, 70, 63, 45, 729, 84, 75, 52, 1024, 56, 1296, 66, 66, 128, 1944, 60, 112, 78, 126, 88, 3072, 78, 140, 78, 150, 224, 5184, 81, 6144, 256, 104, 90 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`The smallest positive integer with 5^2 divisors = A061707(5) = 1296. The first 5 of the 25 divisors of 1296 are: 1,2,3,4,6. Since the 5th divisor is 6, then a(5) = 6.`
	CROSSREFS	`Cf. A061707.` `Sequence in context: A034298 A092404 A094871 this_sequence A079667 A073061 A006874` `Adjacent sequences: A157447 A157448 A157449 this_sequence A157451 A157452 A157453`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Mar 01 2009`
	EXTENSIONS	`More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 14 2009` `a(45)-a(64) from Ray Chandler (rayjchandler(AT)sbcglobal.net), Jun 19 2009`

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Last modified December 1 13:27 EST 2009. Contains 167806 sequences.

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