-1206

Appears in sequences

• n times the coefficient of x^n in log[1 + sum(k>=0, x^2^k)].at n=34A092462
• G.f.: Product_{k>0} (1-x^(2k-1))/(1-x^(2k)).at n=31A106507
• a(n) = prime(n+3)*prime(n) - prime(n+1)*prime(n+2).at n=41A117301
• E.g.f. A(x) is defined by: A(x) = Integral B(x)*C(x)^2 - B(x)^2*C(x) dx, where B(x) and C(x) are described by A278747 and A278748, respectively.at n=4A278746
• Expansion of phi(x)^2 * chi(x^2)^4 * f(-x)^2 in powers of x where phi(), chi(), f() are Ramanujan theta functions.at n=45A280339
• Expansion of r(q)^2 / r(q^2) in powers of q where r() is the Rogers-Ramanujan continued fraction.at n=36A285349
• Expansion of the unique formal power series R(t) with constant term 0 satisfying t = Sum_{n>=0} (1/(n+1))*binomial(2n,n)*binomial(3n,n)/*R(t)^(n+1).at n=4A324313