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Search: id:A049216
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| A049216 |
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Scaled coefficients of (arctanh x)^5. |
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+0
2
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| 1, 70, 6384, 804320, 136804096, 30459752960, 8632830664704, 3041109959196672, 1305140879116763136, 670935549630120394752, 407240889859179425562624, 288272814806050917816729600
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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e.g.f. (arctanh x)^5 or (1-x^2)^-1 * (arctanh x)^4
a(n) is coefficient of x^(2*n+5) in (arctanh x)^5, multiplied by (2*n+5)!/5!
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EXAMPLE
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(arctanh x)^5 = x^5 + 5/3*x^7 + 19/9*x^9 + 457/189*x^11 + ...
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CROSSREFS
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Sequence in context: A064114 A146349 A060057 this_sequence A007100 A103157 A007099
Adjacent sequences: A049213 A049214 A049215 this_sequence A049217 A049218 A049219
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KEYWORD
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nonn
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AUTHOR
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Joe Keane (jgk(AT)jgk.org)
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