-6768domain: ZAppears in sequencesFrom fundamental unit of Z[ (-n)^{1/4} ].at n=33A006831A Chebyshev transform of Padovan numbers.at n=35A099491Riordan array (1/(1+3x+2x^2),x/(1+3x+2x^2)).at n=39A1118061/product(1 - a(n)*(x^n)/n!, n=1..infinity) = 1 + sum((x^k)/k, k=1..infinity) = 1 - log(1-x).at n=7A157164