33955domain: NAppears in sequencesPisot sequence T(5,9), a(n) = floor(a(n-1)^2/a(n-2)).at n=16A020750Number of dominating subsets of the theta-graph TH(2,2,n) (n>=1). A tribonacci sequence with initial values 13, 23, and 41.at n=13A213655