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A068625 Reduced root factorial of n: product of the smallest integer root of numbers from 1 to n. 0
1, 2, 6, 12, 60, 360, 2520, 5040, 15120, 151200, 1663200, 19958400, 259459200, 3632428800, 54486432000, 108972864000, 1852538688000, 33345696384000, 633568231296000, 12671364625920000, 266098657144320000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..21.

EXAMPLE

a(8) = 1*2*3*2*5*6*7*2= 5040.

CROSSREFS

Sequence in context: A072938 A160274 A048803 * A162935 A051451 A090951

Adjacent sequences:  A068622 A068623 A068624 * A068626 A068627 A068628

KEYWORD

easy,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 26 2002

STATUS

approved

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Last modified June 18 17:08 EDT 2013. Contains 226355 sequences.