| 1, 1, 1, 5, 5, 5, 5, 9, 9, 9, 9, 9, 9, 9, 9, 63, 63, 63, 63, 63, 63, 63, 63, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 735, 735, 735, 945, 945, 945, 1155, 1155, 1155, 1155, 1155, 1155, 1155
(list; graph; listen)
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OFFSET
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1,4
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PROGRAM
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(PARI) for(n=1, 56, s=1; while(sum(i=1, n, issquarefree(2*i*s+1))<n, s++); print1(s, ", "))
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CROSSREFS
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Sequence in context: A139259 A105444 A033299 this_sequence A003870 A076407 A134701
Adjacent sequences: A071574 A071575 A071576 this_sequence A071578 A071579 A071580
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KEYWORD
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easy,nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), May 31 2002
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