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A013164
cosh(arctanh(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+51/4!*x^4-180/5!*x^5...
0
1, 0, 4, -6, 51, -180, 1710, -9450, 105525, -793800, 10319400, -98232750, 1463667975, -16856739900, 283755121650, -3834908327250, 72041492147625, -1117601855370000, 23190238498927500, -406108574195073750
OFFSET
0,3
CROSSREFS
Sequence in context: A241159 A116656 A012933 * A013024 A012910 A259133
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved