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Search: id:A089217
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| A089217 |
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n-2 is a prime of the form 4k+3. |
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+0
1
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| 5, 9, 13, 21, 25, 33, 45, 49, 61, 69, 73, 85, 105, 109, 129, 133, 141, 153, 165, 169, 181, 193, 201, 213, 225, 229, 241, 253, 265, 273, 285, 309, 313, 333, 349, 361, 369, 381, 385, 421, 433, 441, 445, 465, 469, 481, 489, 493, 501, 505, 525, 549
(list; graph; listen)
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OFFSET
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0,1
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REFERENCES
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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
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a(n) = A087915(n)+ A089193(n)
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CROSSREFS
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Cf. A087915, A089193.
Sequence in context: A023493 A087461 A057961 this_sequence A166049 A053411 A023382
Adjacent sequences: A089214 A089215 A089216 this_sequence A089218 A089219 A089220
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KEYWORD
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easy,nonn
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AUTHOR
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Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Dec 10 2003
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