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Search: id:A000816
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| A000816 |
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Expansion of sin^2 x /cos 2x. |
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+0
5
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| 0, 2, 40, 1952, 177280, 25866752, 5535262720, 1633165156352, 635421069967360, 315212388819402752, 194181169538675507200, 145435130631317935357952, 130145345400688287667978240, 137139396592145493713802493952
(list; graph; listen)
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OFFSET
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0,2
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LINKS
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R. J. Mathar, Table of n, a(n) for n = 1..200
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FORMULA
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1/2 * A002436(n+1), n>0. - R. Stephan, Mar 09 2004
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CROSSREFS
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Cf. A000819, A000822, A000828, A003707, A009125, A009569.
Equals 2^(2n-1) * A000364(n).
Sequence in context: A012241 A099707 A163826 this_sequence A000819 A060079 A052502
Adjacent sequences: A000813 A000814 A000815 this_sequence A000817 A000818 A000819
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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