45608domain: NAppears in sequencesNumber of meaningful differential operations of the n-th order on the space R^(2+n).at n=12A127935G.f. A(x) satisfies 1/2 = Sum_{n=-oo..+oo} (-1)^n * x^(2*n) * (A(x) + (-x)^n)^(2*n-1).at n=6A379765