-13823domain: ZAppears in sequencesFrom fundamental unit of Z[ (-d)^{1/4} ], where d runs over positive integers not of the form 4*k^4.at n=16A006828a(n) = 1 - n^3.at n=24A024001Expansion of (1-x)^(-1)/(1-2*x^2+2*x^3).at n=19A077881