-3318

Appears in sequences

• sech(tan(x)+sin(x))=1-4/2!*x^2+72/4!*x^4-3318/6!*x^6+283640/8!*x^8...at n=3A012947
• Expansion of (chi(-x) * chi(-x^19))^2 in powers of x where chi() is a Ramanujan theta function.at n=45A134005
• G.f. A(x) satisfies: A(x) = 1 - x * A(x/(1 - x)) / (1 - x)^4.at n=8A346059