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A013705
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Decimal expansion of 4 sum {k = 1...500,000} (-1)^(k-1)/(2k-1).
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2
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3, 1, 4, 1, 5, 9, 0, 6, 5, 3, 5, 8, 9, 7, 9, 3, 2, 4, 0, 4, 6, 2, 6, 4, 3, 3, 8, 3, 2, 6, 9, 5, 0, 2, 8, 8, 4, 1, 9, 7, 2, 9, 1, 3, 9, 9, 3, 7, 5, 1, 0, 3, 0, 5, 0, 9, 7, 4, 9, 4, 4, 6, 9, 3, 3, 4, 9, 8, 1, 6, 4, 0, 0, 8, 8, 0, 6, 8, 0, 5
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| J. M. Borwein, P. B. Borwein and K. Dilcher, Pi, Euler numbers and asymptotic expansions, Amer. Math. Monthly, 96 (1989), 681-687.
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LINKS
| J. M. Borwein and R. M. Corless, Review of ``An Encyclopedia of Integer Sequences'' by N. J. A. Sloane and Simon Plouffe", SIAM Review, 38 (1996), 333-337.
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EXAMPLE
| 3.1415906535897932404626433832695028841972913993751030509749446933498164008806805...
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CROSSREFS
| Cf. A000796, A013707, A013706.
Sequence in context: A179820 A166050 A152040 * A087478 A112602 A000796
Adjacent sequences: A013702 A013703 A013704 * A013706 A013707 A013708
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KEYWORD
| cons,nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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