id:A020644 - OEIS Search Results

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A020644

a(n)-th non-square-free is sum of first k non-square-frees for some k.

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1, 4, 18, 53, 134, 154, 170, 319, 348, 373, 400, 460, 522, 552, 588, 661, 741, 858, 899, 985, 1033, 1081, 1275, 1324, 1375, 1769, 1829, 1949, 2143, 2276, 2475, 2687, 2988, 3063, 3222, 3304, 3384, 3466, 3553, 3636, 3724, 3994, 4085, 4469, 4561, 4663, 5055 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A013933, A013934, A013935.` `Sequence in context: A092349 A027659 A059133 this_sequence A027286 A119044 A058851` `Adjacent sequences: A020641 A020642 A020643 this_sequence A020645 A020646 A020647`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Renaud Lifchitz (100637.64(AT)CompuServe.COM), David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

AT&T Labs Research