OFFSET
0,3
COMMENTS
Numerators of Maclaurin coefficients of sqrt(tan(sqrt(x))/x^(1/4).
LINKS
Robert Israel, Table of n, a(n) for n = 0..241
FORMULA
sqrt(tan(x)/x) = Sum_{k=0..oo} a(k)/A367519(k) * x^(2*k).
EXAMPLE
sqrt(tan(x)/x) = 1 + (1/6) * x^2 + (19/360) * x^4 + (55/3024) * x^6 + ...
MAPLE
S:= series(sqrt(tan(x)/x), x, 41):
seq(numer(coeff(S, x, i)), i=0..40, 2);
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Robert Israel, Nov 21 2023
STATUS
approved