236857domain: NAppears in sequencesNumber of Dyck paths of semilength n with no peak at height 4.at n=13A059027Solve 2^n - 2 = 7(x^2 - x) + (y^2 - y) for (x,y) with x>0, y>0; a(n) = value of y.at n=35A076631a(n+3) = 2a(n+2) - 3a(n+1) + 2a(n); a(0) = 1, a(1) = -1, a(2) = -2.at n=35A105225Row sums of A129392.at n=16A129393