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A120426 n-th number with the same prime signature as n. 3
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, 425 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

David A. Corneth, Table of n, a(n) for n = 1..20000

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) = [n-th number whose prime signature is the same as m]^k.

CROSSREFS

Cf. A000040, A006450, A046523, A118914.

Sequence in context: A343768 A235356 A347593 * A077201 A196467 A219506

Adjacent sequences:  A120423 A120424 A120425 * A120427 A120428 A120429

KEYWORD

nonn

AUTHOR

Franklin T. Adams-Watters, Jul 12 2006

STATUS

approved

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Last modified October 26 02:14 EDT 2021. Contains 348256 sequences. (Running on oeis4.)