228481domain: NAppears in sequencesa(n) = 6*a(n-1)-8*a(n-2)+3 for n > 1; a(0) = 1, a(1) = 8.at n=8A171479Odd numbers k such that the ring of integers of Q(5^(1/k)) is not Z[5^(1/k)].at n=8A342391