5368709121domain: NAppears in sequencesa(0) = 6; for n>0, a(n) = 2*a(n-1) - 1.at n=30A083575a(n) = (A001317(2n)-1)/4.at n=17A089893a(n) = 5*4^n+1.at n=15A199115a(n) = 5*8^n+1.at n=10A199553Number of independent vertex sets in the n-Andrásfai graph.at n=26A288038