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A103235
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Number of decimal digits in the Euler number E(10^n).
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0
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1, 5, 139, 2372, 33699, 436962, 5369590, 63695861, 736958569, 8369585647, 93695856417, 1036958564113, 11369585641074, 123695856410673, 1336958564106668, 14369585641066604, 153695856410665964, 1636958564106659561, 17369585641066595523
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| By "Euler number" here we mean the secant or "zig" numbers, and not the Euler number of a finite complex nor the prime numbers generated by the polynomial n^2 + n + 41. [Alonso del Arte, Jan 17 2012]
For n > 0, number of decimal digits in A000364(10^n / 2). [Charles R Greathouse IV, Jan 17 2012]
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LINKS
| Eric Weisstein's World of Mathematics, Euler Number
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EXAMPLE
| 0, -50521, ...
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MATHEMATICA
| Block[{$MaxExtraPrecision = Infinity}, Join[{1}, Table[Ceiling[Log[10, Abs[EulerE[10^n]]]], {n, 4}]]] (* Alonso del Arte, Jan 17 2012 *)
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CROSSREFS
| Cf. A000364, A122045.
Sequence in context: A192644 A134766 A122911 * A188451 A061463 A091058
Adjacent sequences: A103232 A103233 A103234 * A103236 A103237 A103238
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KEYWORD
| nonn,base
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Jan 27, 2005
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EXTENSIONS
| More terms from Robert Gerbicz (robert.gerbicz(AT)gmail.com), Nov 26 2010
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