A053906 - OEIS

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A053906

Numbers n such that n^2 contains only digits {1,6,7}.

1, 4, 26, 131, 276, 881, 3431, 81346, 81619, 129119, 132954, 1292931424 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences`
	CROSSREFS	`Cf. A053907.` `Sequence in context: A147621 A184263 A058408 * A197964 A100236 A180226` `Adjacent sequences: A053903 A053904 A053905 * A053907 A053908 A053909`
	KEYWORD	`nonn,base,more`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.`
	EXTENSIONS	`More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005`

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Last modified February 13 10:03 EST 2012. Contains 205451 sequences.