-259289580domain: ZAppears in sequencesExpansion of sqrt(1 - 4*x) in powers of x.at n=18A002420An inverse Chebyshev transform of (1-x)^2.at n=33A099364Expansion of exp( arcsinh( -2*x ) ) in powers of x.at n=36A104624Expansion of exp( arcsinh( 2*x ) ).at n=36A182122