-4464

Appears in sequences

• Expansion of e.g.f. log(arcsin(x) + exp(x)).at n=6A012911
• sinh(exp(x)-sec(x)) = x + 2/3!*x^3 - 4/4!*x^4 + 12/5!*x^5 - 120/6!*x^6 + ...at n=8A013333
• A triangular sequence from 2^n times the coefficients of characteristic polynomials of a rational tridiagonal matrix type: M(3)= {{1/2,-1,0} {-1,1/2,-m}, {0,-1,1/2}}};m=-1; polynomial recursion associated is: p(x, n) = (1 - 2*x)*p(x, n - 1)/2 - p(x, n - 2);.at n=47A136330
• 1-gonal pyramidal numbers.at n=30A254749
• Table of expansion of j_n in powers of j (A000521).at n=26A289141
• Expansion of 1/j^6 where j is the elliptic modular invariant (A000521).at n=1A289513
• Row 4 in rectangular array A292929.at n=19A294067
• L.g.f.: log(Product_{k>=1} (1 + x^k/(1 - x))) = Sum_{k>=1} a(k)*x^k/k.at n=46A307761
• (Sum_{t=0..oo} ((-1)^t*(2*t+1)*q^((2*t+1)^2)))^3 * (Sum_{t=0..oo} q^((2*t+1)^2)) = Sum_{k=0..oo} a(k)*q^(8*k+4).at n=35A322031