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
KEYWORD
nonn
AUTHOR
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