id:A062084 - OEIS Search Results

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A062084

Square-free numbers such that every digit as well as sum of the digits is a square-free number.

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1, 2, 3, 5, 6, 7, 11, 15, 21, 23, 33, 37, 51, 55, 61, 65, 67, 73, 77, 111, 113, 115, 122, 123, 127, 131, 133, 137, 151, 155, 157, 163, 166, 167, 173, 177, 213, 217, 221, 222, 223, 226, 227, 231, 235, 253, 257, 262, 263, 265, 266, 267, 271, 311, 313, 317, 321 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`a(7) = 23 is a square-free number, 2 and 3 are square-free numbers and the sum of the digits 5 is also a square-free number.`
	CROSSREFS	`Sequence in context: A031402 A019438 A023798 this_sequence A098959 A071251 A077571` `Adjacent sequences: A062081 A062082 A062083 this_sequence A062085 A062086 A062087`
	KEYWORD	`nonn,base,easy`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 16 2001`
	EXTENSIONS	`Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jun 19 2001`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research