-4544

Appears in sequences

• E.g.f. sin(x*tan(x)) (even powers only).at n=4A009515
• Elliptic net associated to y^2 + y = x^3 + x^2 - 2*x, based on the non-torsion generator points P = [0, 0] and Q = [1, 0].at n=37A374833
• Triangle read by rows: T(n, k) = 2^k * hypergeom([-n, -k], [], -1/2).at n=51A375855