id:A061218 - OEIS Search Results

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Least number such that number of divisors is n-th term from A014613 (numbers of form pqrs, products of exactly 4 primes, counted with multiplicity).

+0
1

120, 360, 1260, 1680, 6300, 6720, 5040, 44100, 20160, 107520, 25200, 45360, 430080, 100800, 322560, 176400, 6881280, 181440, 226800, 1290240, 440401920, 705600, 1632960, 1612800, 20643840, 100800, 907200 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n)=A005179[A014613(n)]`
	EXAMPLE	`pqrs=210 is the 27th term in A014613; the smallest number with 210 divisors is 907200=2.2.2.2.2.2.3.3.3.3.5.5.7`
	CROSSREFS	`Cf. A000005, A005179, A014613, A061148, A061149, A061299.` `Sequence in context: A118058 A144524 A052768 this_sequence A052778 A147983 A167562` `Adjacent sequences: A061215 A061216 A061217 this_sequence A061219 A061220 A061221`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Jun 06 2001`

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Last modified December 20 16:40 EST 2009. Contains 171081 sequences.

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