A014080 - OEIS

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A014080

Factorions: equal to the sum of the factorials of their digits in base 10.

1, 2, 145, 40585 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	REFERENCES	`J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 145, p. 50, Ellipses, Paris 2008.` `Clifford A. Pickover, A Passion for Mathematics, Wiley, 2005; see p. 68.` `Joe Roberts, "The Lure of the Integers", page 35.` `D. Wells, Curious and interesting numbers, Penguin Books, p. 125.`
	LINKS	`Project Euler, Problem 34` `Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.`
	MATHEMATICA	`Select[Range[50000], Plus @@ (IntegerDigits[ # ]!) == # &] - Alonso Delarte (alonso.delarte(AT)gmail.com), Jan 14 2008`
	CROSSREFS	`Sequence in context: A074319 A188284 A071064 * A110624 A177319 A175974` `Adjacent sequences: A014077 A014078 A014079 * A014081 A014082 A014083`
	KEYWORD	`nonn,fini,full,base`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`
	EXTENSIONS	`Additional reference from Felice Russo (frusso(AT)micron.com).`

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Last modified February 14 16:54 EST 2012. Contains 205635 sequences.