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A152616 Numbers n with property that exactly three subsets of proper divisors of n sum to n. 0
30, 40, 54, 350, 380, 414, 500, 532, 544, 558, 608, 620, 644, 666, 726, 740, 1372, 2002, 2190, 2368, 2370, 2490, 2624, 2670, 2910, 3030, 3090, 3162, 3210, 3250, 3270, 3390, 3410, 3430, 3810, 3880, 3930, 4040, 4110, 4120, 4170, 4280, 4360, 4470, 4520, 4530 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Or numbers n such that A065205(n)=3.

LINKS

Table of n, a(n) for n=1..46.

EXAMPLE

n=30: proper divisors of 30 = {1,2,3,5,6,10,15} and

30=5+10+15=2+3+10+15=1+3+5+6+15.

CROSSREFS

Cf. A064771, A065205, A065235, A152615.

Sequence in context: A223727 A025376 A280640 * A309306 A103250 A181638

Adjacent sequences:  A152613 A152614 A152615 * A152617 A152618 A152619

KEYWORD

nonn

AUTHOR

Zak Seidov, Oct 29 2009

STATUS

approved

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Last modified September 18 20:18 EDT 2019. Contains 327181 sequences. (Running on oeis4.)