a(1) = 4; a(n) = average of the largest and the smallest n-digit primes.

A073863

a(1) = 4; a(n) = average of the largest and the smallest n-digit primes.

Terms

    a(0) =4a(1) =54a(2) =549a(3) =5491a(4) =54999a(5) =549993a(6) =5499997a(7) =55000004a(8) =549999972a(9) =5499999987a(10) =54999999998a(11) =549999999996

External references