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Search: id:A093617
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A093617 Numbers n such that there exists a k less than n with k*n and n^2 having an equal number of divisors. +0
3
18, 50, 75, 90, 98, 108, 126, 144, 147, 150, 198, 234, 242, 245, 294, 300, 306, 324, 338, 342, 350, 363, 384, 400, 414, 450, 490, 500, 507, 522, 525, 540, 550, 558, 578, 588, 600, 605, 630, 640, 648, 650, 666, 720, 722, 726, 735, 738, 756, 774, 784, 825 (list; graph; listen)
OFFSET

1,1

COMMENT

A093616(a(n)) < n; complement of A093618.

CROSSREFS

Cf. A000005, A000290, A048691.

Sequence in context: A135189 A071365 A097319 this_sequence A089219 A102835 A095990

Adjacent sequences: A093614 A093615 A093616 this_sequence A093618 A093619 A093620

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 06 2004

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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