id:A120426 - OEIS Search Results

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A120426

n-th number with the same prime signature as n.

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1

1, 3, 5, 49, 11, 22, 17, 6859, 529, 35, 31, 76, 41, 51, 55, 7890481, 59, 124, 67, 148, 74, 77, 83, 472, 9409, 87, 1092727, 212, 109, 285, 127, 38579489651, 115, 118, 119, 14884, 157, 129, 133, 856, 179, 385, 191, 356, 363, 155, 211, 2512, 51529, 412, 177 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Eric Weisstein's World of Mathematics, Prime Signature`
	FORMULA	`If p is prime, a(p) = prime(p). a(p^k) = prime(p^k)^k. More generally, if n = m^k, a(n) = [nth number whose prime signature is the same as m]^k.`
	CROSSREFS	`Cf. A000040, A006450, A046523, A118914.` `Sequence in context: A120265 A158328 A062633 this_sequence A077201 A101149 A056260` `Adjacent sequences: A120423 A120424 A120425 this_sequence A120427 A120428 A120429`
	KEYWORD	`nonn`
	AUTHOR	`Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jul 12 2006`

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Last modified November 25 13:47 EST 2009. Contains 167481 sequences.

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