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Search: id:A065605
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| A065605 |
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The (3^n)-th composite number. |
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+0
1
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| 4, 8, 16, 40, 111, 306, 882, 2563, 7513, 22170, 65602, 194695, 578949, 1724117, 5140568, 15340177, 45811041, 136886318, 409221920, 1223856725, 3661401440, 10956876415, 32796782398, 98189738332, 294021666926, 880564233896
(list; graph; listen)
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OFFSET
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0,1
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MATHEMATICA
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Composite[n_Integer] := Block[ {k = n + PrimePi[n] + 1 }, While[ k != n + PrimePi[k] + 1, k = n + PrimePi[k] + 1]; Return[ k ]]; Table[ Composite[3^n], {n, 0, 25} ]
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CROSSREFS
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Sequence in context: A040014 A141069 A144687 this_sequence A065978 A077447 A102358
Adjacent sequences: A065602 A065603 A065604 this_sequence A065606 A065607 A065608
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 27 2001
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