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A175943 Partial products of A027746. 4
1, 2, 6, 12, 24, 120, 240, 720, 5040, 10080, 20160, 40320, 120960, 362880, 725760, 3628800, 39916800, 79833600, 159667200, 479001600, 6227020800, 12454041600, 87178291200, 261534873600, 1307674368000, 2615348736000, 5230697472000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n) <= A265125(n), a(n) < A265125(n) for n > 10. - Reinhard Zumkeller, Dec 02 2015

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..1000

FORMULA

a(n) is approximately (n / (e log log n))^(n/log log n). - Charles R Greathouse IV, Sep 12 2012

PROG

(PARI) print1(t=1); for(n=2, 10, f=factor(n); for(i=1, #f[, 1], for(j=1, f[i, 2], print1(", "t*=f[i, 1])))) \\ Charles R Greathouse IV, Sep 12 2012

(Haskell)

a175943 n = a175943_list !! (n-1)

a175943_list = scanl1 (*) $ concat a027746_tabf

-- Reinhard Zumkeller, Dec 02 2015

CROSSREFS

n! (A000142) is a subsequence.

Cf. A027746.

Cf. A265125.

Sequence in context: A163895 A180071 A034882 * A228816 A294565 A210068

Adjacent sequences:  A175940 A175941 A175942 * A175944 A175945 A175946

KEYWORD

nonn

AUTHOR

Lior Manor, Oct 27 2010

STATUS

approved

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Last modified December 13 00:17 EST 2017. Contains 295954 sequences.