id:A063774 - OEIS Search Results

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Number of divisors of n^2 is a square.

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1, 6, 10, 14, 15, 16, 21, 22, 26, 33, 34, 35, 36, 38, 39, 46, 51, 55, 57, 58, 62, 65, 69, 74, 77, 81, 82, 85, 86, 87, 91, 93, 94, 95, 100, 106, 111, 115, 118, 119, 122, 123, 129, 133, 134, 141, 142, 143, 145, 146, 155, 158, 159, 161, 166, 177, 178, 183, 185, 187, 194 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`n=2: a(2) = 6 because the number of divisors of 6^2 is 9, a square.`
	PROGRAM	`(PARI) j=[]; for(n=1, 500, a=numdiv(n^2); if(issquare(a), j=concat(j, n))); j`
	CROSSREFS	`Adjacent sequences: A063771 A063772 A063773 this_sequence A063775 A063776 A063777` `Sequence in context: A088706 A087710 A129146 this_sequence A068993 A138592 A085232`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Aug 15 2001`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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