93152domain: NAppears in sequencesPisot sequence P(4,11), a(0)=4, a(1)=11, a(n+1) is the nearest integer to a(n)^2/a(n-1). Evidently satisfies a(n) = 2*a(n-1)+2*a(n-2).at n=10A021006Expansion of (-1 + Product_{k>=1} 1 / (1 + (-x)^k))^10.at n=15A341253