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A049216 Scaled coefficients of (arctanh x)^5. 1
1, 70, 6384, 804320, 136804096, 30459752960, 8632830664704, 3041109959196672, 1305140879116763136, 670935549630120394752, 407240889859179425562624, 288272814806050917816729600 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..11.

FORMULA

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!

EXAMPLE

(arctanh x)^5 = x^5 + 5/3*x^7 + 19/9*x^9 + 457/189*x^11 + ...

CROSSREFS

Sequence in context: A180884 A238540 A060057 * A229477 A213699 A184275

Adjacent sequences:  A049213 A049214 A049215 * A049217 A049218 A049219

KEYWORD

nonn

AUTHOR

Joe Keane (jgk(AT)jgk.org)

STATUS

approved

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Last modified November 15 14:08 EST 2018. Contains 317239 sequences. (Running on oeis4.)