1176579domain: NAppears in sequencesa(n) = least positive integer k such that k^2+3 is divisible by at least n distinct primes.at n=8A138769a(n) = number of integer solutions to 1 <= x1 <= x2 <= ... <= xn to 1/x1 + ... + 1/xn = (1 - 1/x1) * ... * (1 - 1/xn).at n=6A369470