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A168352 Products of 6 distinct odd primes. 0
255255, 285285, 345345, 373065, 435435, 440895, 451605, 465465, 504735, 533715, 555555, 569415, 596505, 608685, 615615, 636405, 645645, 672945, 680295, 692835, 705705, 719355, 726495, 752115, 770385, 780045, 795795, 803985, 805035, 811965 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..30.

FORMULA

A067885 INTERSECT A005408 [R. J. Mathar, Nov 24 2009]

EXAMPLE

255255=3*5*7*11*13*17 285285=3*5*7*11*13*19 345345=3*5*7*11*13*23 435435=3*5*7*11*13*29

MATHEMATICA

f[n_]:=Last/@FactorInteger[n]=={1, 1, 1, 1, 1, 1}&&FactorInteger[n][[1, 1]]>2; lst={}; Do[If[f[n], AppendTo[lst, n]], {n, 6*9!}]; lst

CROSSREFS

Sequence in context: A140079 A321505 A034631 * A147579 A087025 A249915

Adjacent sequences:  A168349 A168350 A168351 * A168353 A168354 A168355

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Nov 23 2009

EXTENSIONS

Definition corrected by R. J. Mathar, Nov 24 2009

STATUS

approved

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Last modified July 5 18:40 EDT 2020. Contains 335473 sequences. (Running on oeis4.)