-2436

Appears in sequences

• Expansion of e.g.f. exp(tanh(x)*log(1+x)).at n=7A009269
• McKay-Thompson series of class 44a for Monster.at n=40A058680
• Triangle of coefficients of polynomials in Sum_{k=0..n} binomial(n,k) * k^r.at n=33A102573
• a(n) = a(n-1) - 2*a(n-2) - 3*a(n-3) - ... - (n-1)*a(1), a(1) = a(2) = 3, a(3) = -3.at n=12A106542
• Triangle read by rows: coefficients of polynomials in Sum_{k = 0..t} k^n * binomial(t,k).at n=39A209849
• E.g.f. C = C(x,y) satisfies: A^2 + B^2 + C^2 = 1 + y^2 and A^3 + B^3 + C^3 = 1 + y^3, where functions A = A(x,y) and B = B(x,y) are described by A278885 and A278886, respectively.at n=56A278887
• Square array A(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where A(n,k) = -Sum_{d|n} phi(n/d) * (-k)^d.at n=48A382994