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A186928 Greater of two consecutive 3-smooth numbers having no common divisors. 3
2, 3, 4, 9, 32, 256, 2187, 531441, 134217728, 70368744177664, 36893488147419103232, 19383245667680019896796723, 713623846352979940529142984724747568191373312, 13803492693581127574869511724554050904902217944340773110325048447598592 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) = A003586(A186771(n) + 1); A186927(n) = A003586(A186771(n));

also a subsequence of A006899: all terms are either powers of 2 or of 3.

LINKS

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

CROSSREFS

Cf. A186711.

Sequence in context: A059972 A245930 A086432 * A076018 A076017 A245366

Adjacent sequences:  A186925 A186926 A186927 * A186929 A186930 A186931

KEYWORD

nonn

AUTHOR

Charles R Greathouse IV and Reinhard Zumkeller, Mar 01 2011

STATUS

approved

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Last modified December 22 12:59 EST 2014. Contains 252357 sequences.