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A002459
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Nearest integer to cosh(n).
(Formerly M1223 N0470)
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1
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1, 2, 4, 10, 27, 74, 202, 548, 1490, 4052, 11013, 29937, 81377, 221207, 601302, 1634509, 4443055, 12077476, 32829985, 89241150, 242582598, 659407867, 1792456423
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| K. Hayashi, Sieben- und Mehrstellige Tafeln der Kreis- und Hyperbelfunktionen und deren Produkte Sowie der Gammafunktion. Springer-Verlag, Berlin, 1926.
A. V. Lebedev and R. M. Fedorova, A Guide to Mathematical Tables. Pergamon, Oxford, 1960, p. 93.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| T. D. Noe, Table of n, a(n) for n=0..150
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FORMULA
| |a(n)-A000495(n)|<=1. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 28 2008]
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MAPLE
| Digits := 50: [ seq( round(evalf(cosh(n))), n=0..35) ];
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CROSSREFS
| Sequence in context: A086991 A173758 A113066 * A104383 A205480 A108523
Adjacent sequences: A002456 A002457 A002458 * A002460 A002461 A002462
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KEYWORD
| nonn,nice,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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