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Search: id:A013478
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| A013478 |
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arctanh(cos(x)-cosh(x))=-242/6!*x^6-735842/10!*x^10... |
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| 242, 735842, 12696924242, 729261623797442, 105330801708282667442, 32155390653420235027326242, 18430773614710132775756232045842, 18200656974294045189446138614387578242
(list; graph; listen)
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OFFSET
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0,1
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MAPLE
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g := taylor(arctanh(cos(x)-cosh(x)), x=0, 100):q := seq(abs(coeff(g, x, 4*i+2)*(4*i+2)!), i=1..15);
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CROSSREFS
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Sequence in context: A035748 A022153 A013472 this_sequence A055554 A018871 A046318
Adjacent sequences: A013475 A013476 A013477 this_sequence A013479 A013480 A013481
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KEYWORD
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nonn
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AUTHOR
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Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 24 2002
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