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A071836 Largest prime factor of n = prime(tau(n)). 0
3, 14, 21, 25, 35, 52, 114, 117, 152, 190, 266, 285, 325, 338, 343, 399, 418, 444, 464, 494, 507, 513, 627, 637, 646, 665, 666, 740, 741, 845, 969, 1036, 1045, 1183, 1184, 1235, 1272, 1463, 1573, 1590, 1615, 1628, 1665, 1729, 1850, 1859, 1924, 2116, 2120 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..49.

FORMULA

n such that A006530(n) = A000040(A000005(n))

EXAMPLE

666 = 2.3^2.37 tau(666) = 12 prime(12) = 37 hence 666 is in the sequence.

PROG

(PARI) for(n=2, 3000, if(component(component(factor(n), 1), omega(n))==prime(numdiv(n)), print1(n, ", ")))

CROSSREFS

Sequence in context: A015639 A019000 A305090 * A300216 A258218 A255219

Adjacent sequences:  A071833 A071834 A071835 * A071837 A071838 A071839

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre, Jun 08 2002

STATUS

approved

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Last modified September 18 17:45 EDT 2019. Contains 327178 sequences. (Running on oeis4.)