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A063831
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Sum of cubes of divisors is a square.
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0
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1, 2, 345, 690, 47196, 46248900, 53262468, 71315748, 140553735, 188194335, 215515727, 281107470, 288564647, 292978595, 310129096, 376388670, 431031454, 577129294, 585957190, 1474108335, 2133051720, 2489605188, 2948216670
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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PROG
| (PARI) for(n=1, 10^5, if(issquare(sigma(n, 3)), print(n)))
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CROSSREFS
| Cf. A001158.
Sequence in context: A063968 A172136 A064501 * A064023 A179959 A024350
Adjacent sequences: A063828 A063829 A063830 * A063832 A063833 A063834
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KEYWORD
| nonn
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AUTHOR
| Jason Earls (zevi_35711(AT)yahoo.com), Aug 21 2001
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EXTENSIONS
| More terms from Thomas Baruchel (baruchel(AT)users.sourceforge.net), Oct 20 2003
More terms from Sean A. Irvine (sairvin(AT)xtra.co.nz), Sep 24 2009
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