81442domain: NAppears in sequencesNumbers whose base-5 representation has exactly 8 runs.at n=26A043608Expansion of (x-7*x^2+19*x^3-21*x^4+10*x^5-6*x^6) / (1-9*x+31*x^2-53*x^3+44*x^4-16*x^5+6*x^6).at n=10A078486