OFFSET
1,2
COMMENTS
Series contributed by David W. Cantrell.
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 1..250
Vaclav Kotesovec, Asymptotic of the coefficients A079330 / A088989
Eric Weisstein's World of Mathematics, Tanc Function
FORMULA
A079330(n)/A088989(n) ~ c * (Pi/2)^(2*n) / n^(4/3), where c = GAMMA(1/3)/(2^(2/3)*3^(1/6)*Pi^(5/3)) = 0.208532... . - Vaclav Kotesovec, Aug 19 2014
MATHEMATICA
Last/@Partition[CoefficientList[InverseSeries[Series[x+Cot[x], {x, 0, 50}], q], 1/q], 2]
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Eric W. Weisstein, Jan 03 2003
STATUS
approved