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A002459 Nearest integer to cosh(n).
(Formerly M1223 N0470)
1
1, 2, 4, 10, 27, 74, 202, 548, 1490, 4052, 11013, 29937, 81377, 221207, 601302, 1634509, 4443055, 12077476, 32829985, 89241150, 242582598, 659407867, 1792456423, 4872401723, 13244561065, 36002449669, 97864804714, 266024120301, 723128532146, 1965667148572 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
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).
LINKS
FORMULA
|a(n) - A000495(n)| <= 1. - R. J. Mathar, Oct 28 2008
MAPLE
Digits := 50: [ seq( round(evalf(cosh(n))), n=0..35) ];
MATHEMATICA
Round[Cosh[Range[0, 40]]] (* Harvey P. Dale, Jan 08 2014 *)
CROSSREFS
Sequence in context: A272603 A272602 A113066 * A216434 A220829 A339838
KEYWORD
nonn,nice,easy
AUTHOR
EXTENSIONS
More terms from Harvey P. Dale, Jan 08 2014
STATUS
approved

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Last modified February 22 22:43 EST 2024. Contains 370265 sequences. (Running on oeis4.)