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A089953
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Numbers n such that 3*n+7 is prime.
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3
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0, 2, 4, 8, 10, 12, 18, 20, 22, 24, 30, 32, 34, 40, 44, 48, 50, 52, 58, 62, 64, 68, 72, 74, 78, 88, 90, 92, 100, 102, 108, 110, 114, 120, 122, 124, 130, 134, 138, 142, 144, 150, 152, 160, 164, 172, 178, 180, 188, 190, 198, 200, 202, 204, 208, 212, 218, 222, 228
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988
Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997
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FORMULA
| a(n) = A034936(n)-1 = A024892(n)-2 = 2*A024899(n)-2.
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CROSSREFS
| Cf. A002476 gives primes, A034936, A024892, A024899.
Sequence in context: A098968 A032368 A134533 * A155133 A154788 A100278
Adjacent sequences: A089950 A089951 A089952 * A089954 A089955 A089956
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KEYWORD
| nonn
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AUTHOR
| Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Jan 12 2004
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EXTENSIONS
| Offset corrected by Arkadiusz Wesolowski, Aug 09 2011
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