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A250270 Products of members of A003418 (A003418(n) = least common multiple of the integers {1,...,n}). 3
1, 2, 4, 6, 8, 12, 16, 24, 32, 36, 48, 60, 64, 72, 96, 120, 128, 144, 192, 216, 240, 256, 288, 360, 384, 420, 432, 480, 512, 576, 720, 768, 840, 864, 960, 1024, 1152, 1296, 1440, 1536, 1680, 1728, 1920, 2048, 2160, 2304, 2520, 2592, 2880, 3072, 3360, 3456 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Includes all factorials and Jordan-Polya numbers, since n! = Product_{i = 1...n} A003418(floor(n/i)) for positive n.

LINKS

Table of n, a(n) for n=1..52.

EXAMPLE

720 = 2*6*60 = 12*60.  Since 2, 6, 12 and 60 are all members of A003418, 720 is a member of this sequence.

CROSSREFS

Range of values of A253139. Subsequences include A000142, A001013, A001813, A025527, A064350, A166338, A250569.

Subsequence of A025487.

Sequence in context: A325238 A070175 A096850 * A062847 A001013 A115746

Adjacent sequences:  A250267 A250268 A250269 * A250271 A250272 A250273

KEYWORD

nonn

AUTHOR

Matthew Vandermast, Dec 16 2014

STATUS

approved

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Last modified November 22 08:46 EST 2019. Contains 329389 sequences. (Running on oeis4.)