

A182863


Members m of A025487 such that, if k appears in m's prime signature, k1 appears at least as often as k (for any integer k > 1).


6



1, 2, 6, 12, 30, 60, 210, 360, 420, 1260, 2310, 2520, 4620, 13860, 27720, 30030, 60060, 75600, 138600, 180180, 360360, 510510, 831600, 900900, 1021020, 1801800, 3063060, 6126120, 9699690, 10810800, 15315300, 19399380, 30630600, 37837800
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OFFSET

1,2


COMMENTS

Members m of A025487 such that A181819(m) is also a member of A025487.
If prime signatures are considered as partitions, these are the members of A025487 whose prime signature is conjugate to the prime signature of a member of A181818.


LINKS

Amiram Eldar, Table of n, a(n) for n = 1..1444
Eric Weisstein's World of Mathematics, Conjugate Partition


EXAMPLE

The prime signature of 360360 = 2^3*3^2*5*7*11*13 is (3,2,1,1,1,1). 2 appears as many times as 3 in 360360's prime signature, and 1 appears more times than 2. Since 360360 is also a member of A025487, it is a member of this sequence.


CROSSREFS

Intersection of A025487 and A179983; also subsequence of A129912 and A181826.
Includes all members of A182862.
Sequence in context: A331552 A129912 A283477 * A161507 A335711 A032177
Adjacent sequences: A182860 A182861 A182862 * A182864 A182865 A182866


KEYWORD

nonn


AUTHOR

Matthew Vandermast, Jan 14 2011


STATUS

approved



