5709311029

Appears in sequences

• E.g.f. C(x) satisfies: C(x)^2 - S(x)^2 = 1 and D(x)^4 - S(x)^4 = 1, where functions S(x) and D(x) are described by A280625 and A280627, respectively.at n=7A280626
• E.g.f. C(x) + S(x), such that: C(x)^2 - S(x)^2 = 1 and D(x)^4 - S(x)^4 = 1, where functions S(x), C(x), and D(x) are described by A280625, A280626, and A280627, respectively.at n=14A280628