5600910domain: NAppears in sequencesa(n) = Sum_{k=0..n} T(k) where T(n) are the tribonacci numbers A000073.at n=26A008937Define the generalized Pisot sequence T(a(0),a(1)) by: a(n+2) is the greatest integer such that a(n+2)/a(n+1) < a(n+1)/a(n). This is T(4,8).at n=23A018921