A136996 - OEIS

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A136996

Numbers n such that n and the square of n use only the digits 1, 2, 4 and 7.

1, 2, 11, 12, 21, 421, 1214171, 2777177421 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`Generated with DrScheme`
	LINKS	`J. Wellons, Tables of Shared Digits`
	EXAMPLE	`2777177421^2 = 7712714427712211241`
	CROSSREFS	`Sequence in context: A136970 A136967 A137001 * A113720 A034118 A140148` `Adjacent sequences: A136993 A136994 A136995 * A136997 A136998 A136999`
	KEYWORD	`base,nonn`
	AUTHOR	`Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008`

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Last modified February 17 14:39 EST 2012. Contains 206039 sequences.