id:A077571 - OEIS Search Results

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Squarefree numbers obtained by repeating a single digit.

+0
2

1, 2, 3, 5, 6, 7, 11, 22, 33, 55, 66, 77, 111, 222, 555, 777, 1111, 2222, 3333, 5555, 6666, 7777, 11111, 22222, 33333, 55555, 66666, 77777, 111111, 222222, 555555, 1111111, 2222222, 3333333, 5555555, 6666666, 7777777, 11111111, 22222222, 33333333 (list; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`66 and 6666 are members but 666 is not.`
	CROSSREFS	`Cf. A087094.` `Sequence in context: A062084 A098959 A071251 this_sequence A101730 A039058 A046158` `Adjacent sequences: A077568 A077569 A077570 this_sequence A077572 A077573 A077574`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 11 2002`
	EXTENSIONS	`Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 12 2003`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research