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A141634
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Nonprimes of the form c(c(c(c(c(i)-3)-3)-3)-3)-3, where A002808(i)=c(i)=i-th composite.
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0
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1, 24, 27, 33, 46, 48, 51, 62, 65, 69, 77, 82, 87, 91, 102, 105, 111, 115, 116, 119, 123, 126, 132, 141, 143, 144, 150, 153, 156, 158, 161, 162, 169, 175, 180, 183, 184, 192, 200, 202, 205, 206, 214, 216, 221, 228, 232, 234, 242, 243, 244, 246, 249, 252, 255, 258, 259, 265, 270, 272, 279, 286, 287, 288
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| If i=1, then c(c(c(c(c(1)-3)-3)-3)-3)-3=c(c(c(c(4-3)-3)-3)-3)-3=c(c(c(4-3)-3)-3)-3=c(c(4-3)-3)-3=c(c(1)-3)-3=c(4-3)-3=4-3=1=a(1).
If i=3, then c(c(c(c(c(3)-3)-3)-3)-3)-3=c(c(c(c(8-3)-3)-3)-3)-3=c(c(c(10-3)-3)-3)-3=c(c(14-3)-3)-3=c(c(11)-3)-3=c(20-3)-3=27-3=24=a(2).
If i=4, then c(c(c(c(c(4)-3)-3)-3)-3)-3=c(c(c(c(9-3)-3)-3)-3)-3=c(c(c(12-3)-3)-3)-3=c(c(16-3)-3)-3=c(c(13)-3)-3=c(22-3)-3=30-3=27=a(3).
etc.
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CROSSREFS
| Cf. A002808.
Sequence in context: A071833 A064159 A141632 * A162465 A067193 A095235
Adjacent sequences: A141631 A141632 A141633 * A141635 A141636 A141637
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KEYWORD
| nonn
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AUTHOR
| Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Aug 29 2008
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EXTENSIONS
| Removed incorrect examples. Corrected roughly 20 percent of the values. - R. J. Mathar, Sep 05 2008
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