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A013935
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a(n) is non-squarefree and is sum of first k non-squarefrees for some k.
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4
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4, 12, 49, 136, 343, 388, 436, 820, 884, 952, 1024, 1175, 1336, 1420, 1508, 1690, 1884, 2187, 2295, 2523, 2640, 2760, 3256, 3384, 3516, 4516, 4668, 4977, 5463, 5800, 6318, 6858, 7623, 7821, 8225, 8432, 8640, 8852, 9068, 9288, 9512, 10197, 10431, 11392
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| M. F. Hasler, Table of n, a(n) for n=1,...,10000. [From M. F. Hasler (www.univ-ag.fr/~mhasler), May 01 2009]
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PROG
| (PARI) A013935(n, list=0 /* set to 1 for list, filename for b-file */ )={ my(s=i=0); for(c=1, n, while(issquarefree(i++)|issquarefree(s+=i), ); list | next; list==1 & print1(s", "); write(list, c" "s)); s} [From M. F. Hasler (www.univ-ag.fr/~mhasler), May 01 2009]
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CROSSREFS
| Cf. A013929, A013933, A013934.
Sequence in context: A192622 A111930 A197867 * A149386 A149387 A151473
Adjacent sequences: A013932 A013933 A013934 * A013936 A013937 A013938
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KEYWORD
| nonn
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AUTHOR
| Henri Lifchitz (100637.64(AT)CompuServe.COM)
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EXTENSIONS
| More terms from David W. Wilson (davidwwilson(AT)comcast.net)
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