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A092837
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Indices of terms in the series for sec(x) that have prime numerators.
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0
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2, 3, 4, 19, 24, 227, 255, 443, 1381, 3329, 3817, 3947
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Eric Weisstein's World of Mathematics, Secant
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MATHEMATICA
| f[n_] := Numerator[EulerE[2n]/(2n)! ]; Do[If[PrimeQ[f[n]], Print[n]], {n, 3329}] - Ryan Propper (rpropper(AT)stanford.edu), Apr 01 2007
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CROSSREFS
| Cf. A092838.
Sequence in context: A077407 A123702 A067805 * A058772 A169901 A012285
Adjacent sequences: A092834 A092835 A092836 * A092838 A092839 A092840
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KEYWORD
| nonn,more
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Mar 07, 2004
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EXTENSIONS
| More terms from Ryan Propper (rpropper(AT)stanford.edu), Apr 01 2007, May 11 2007
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