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Search: id:A138729
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| A138729 |
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a(n) = -A085466(n) times the free coefficient of the 2n-th Du Bois-Reymond polynomial in e^2. |
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+0
6
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| 7, 25, 98, 1167, 4650, 30930, 1111860, 31100895, 13812610, 894570642, 89419472100, 1311049104750, 47185076099700, 350440263072900, 4578242813103960, 4119778157653533375, 16476927824724617250, 124478128839848033250, 40326914169455544130500
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OFFSET
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1,1
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MATHEMATICA
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a = {7}; Do[p = FullSimplify[TrigToExp[ -3 - 2Residue[x^2/((Tan[x] - x) (1 + x^2)^n), {x, I}]]]; AppendTo[a, -First[p[[2]]]], {n, 2, 9}]; a (*Artur Jasinski*)
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CROSSREFS
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Cf. A062545, A062546, A085466, A085467, A138729, A138730, A138731, A138732, A138733.
Sequence in context: A155233 A146933 A155258 this_sequence A035509 A141627 A102900
Adjacent sequences: A138726 A138727 A138728 this_sequence A138730 A138731 A138732
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Mar 26 2008
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EXTENSIONS
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Edited and extended by Max Alekseyev (maxale(AT)gmail.com), Sep 15 2009
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