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Search: id:A063642
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| A063642 |
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Primes of form p*q*r + 2, where p, q and r are primes. |
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+0
2
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| 29, 47, 101, 107, 127, 149, 167, 173, 197, 233, 257, 263, 277, 281, 347, 359, 389, 401, 431, 457, 467, 479, 509, 541, 557, 563, 577, 607, 617, 641, 647, 653, 659, 727, 743, 761, 797, 863, 887, 911, 929, 937, 971, 983, 1019, 1087, 1097, 1129, 1181, 1187
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,1000
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PROGRAM
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(PARI) { n=0; for (m=2, 10^9, p=prime(m); if (bigomega(p - 2) == 3, write("b063642.txt", n++, " ", p); if (n==1000, break)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 26 2009]
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CROSSREFS
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A014612, A063640.
Sequence in context: A138052 A119891 A106754 this_sequence A108258 A142728 A042947
Adjacent sequences: A063639 A063640 A063641 this_sequence A063643 A063644 A063645
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 21 2001
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