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A025418
Least sum of 3 positive cubes in exactly n ways.
3
3, 251, 5104, 13896, 161568, 1296378, 2016496, 2562624, 14926248, 34012224, 69190848, 150547032, 119095488, 1204376256, 952763904, 1592865000, 3974344704, 2176782336, 10077696000, 2985984000, 36330467328, 30723115968, 23887872000, 17414258688, 72825163776, 75686967000, 204141384000, 62099136000, 139314069504, 245784927744, 80621568000, 191102976000, 272097792000, 373248000000
OFFSET
1,1
COMMENTS
a(36) = 496793088000. a(37) = 980922617856. a(38) = 209584584000. a(39) = 644972544000. a(42) = 970299000000. - Donovan Johnson
REFERENCES
J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 251, p. 69, Ellipses, Paris 2008.
FORMULA
{min k: A025456(k) = n}. - R. J. Mathar, Jun 15 2018
CROSSREFS
Sequence in context: A124875 A226986 A158351 * A075901 A028918 A213409
KEYWORD
nonn
EXTENSIONS
More terms from Lekraj Beedassy, Jul 20 2008
a(9) corrected and a(11)-a(34) from Donovan Johnson, Nov 13 2010
STATUS
approved