A067292 a(n)=prime(n)-n*tau(n) where tau(n) is the number of divisors of n.

1, -1, -1, -5, 1, -11, 3, -13, -4, -11, 9, -35, 15, -13, -13, -27, 25, -47, 29, -49, -11, -9, 37, -103, 22, -3, -5, -61, 51, -127, 65, -61, 5, 3, 9, -173, 83, 11, 11, -147, 97, -155, 105, -71, -73, 15, 117, -257, 80, -71, 29, -73, 135, -181, 37, -185, 41, 39, 159, -439, 161, 45, -71, -137, 53, -211, 197, -71, 71, -211