-53226

Appears in sequences

• E.g.f. C(x) satisfies: C(x)^2 + 2*S(x)^2 = 1 such that S'(x) = C(x)^2 - S(x)*C(x) and C'(x) = 2*S(x)^2 - 2*S(x)*C(x), where S(x) is described by A279842.at n=8A279841
• E.g.f. satisfies A(x) = x * exp(x - 2 * A(x)).at n=6A360483