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A013559
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Numerator of [x^n] in the Taylor expansion of exp(cosech(x)-coth(x))= 1-x/2 +x^2/8 +x^3/48 -7*x^4/384 +x^5/1280 +97*x^6/46080 -...
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0
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1, -1, 1, 1, -7, 1, 97, -55, -2063, 143, 17803, -968167, -250781, 7000033, -166831871, -571772647, 43685848289, 843598411471, -447550424579
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,5
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COMMENTS
| The inner function is cosech(x)-coth(x) = -x/2 +x^3/24 -x^5/240 +17*x^7/40320 -31*x^9/725760 +691*x^11/159667200 -... with e.g.f numerators cosech(x)-coth(x) = sum b(n)x^n/(n+1)! apparently in A001469.
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CROSSREFS
| Cf. A013521, A096664 (bisections?)
Sequence in context: A027447 A027517 A092082 * A051186 A012034 A138324
Adjacent sequences: A013556 A013557 A013558 * A013560 A013561 A013562
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KEYWORD
| sign
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AUTHOR
| Patrick Demichel (patrick.demichel(AT)hp.com)
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EXTENSIONS
| Values replaced by numerators. - R. J. Mathar, Dec 22 2011
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