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A085912 Group the natural numbers such that the product of the terms of the n-th group is divisible by n!. (1),(2),(3,4),(5,6,7,8),(9,10,11,12),(13,14,15,16,17,18),(19,20,21,22,23,24),... Sequence contains the product pertaining to groups. 3
1, 2, 12, 1680, 11880, 13366080, 96909120, 424097856000, 3100796899200, 37276043023296000, 273589847231500800, 7359037761652306329600, 54123776422857453312000, 2844359511118991175518208000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Obviously the n-th group has at most n terms.

LINKS

Table of n, a(n) for n=1..14.

CROSSREFS

Cf. A085913, A085914, A085915.

Sequence in context: A123743 A111180 A235857 * A085895 A090904 A125295

Adjacent sequences: A085909 A085910 A085911 * A085913 A085914 A085915

KEYWORD

nonn

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jul 10 2003

EXTENSIONS

More terms from Ray Chandler, Sep 15 2003

STATUS

approved

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Last modified January 29 10:31 EST 2023. Contains 359916 sequences. (Running on oeis4.)