A025000 a(1) = 3; a(n+1) = a(n)-th nonprime, where nonprimes begin at 0.

3, 4, 6, 9, 14, 21, 30, 42, 57, 77, 102, 133, 171, 217, 274, 341, 422, 518, 632, 766, 922, 1106, 1320, 1565, 1846, 2171, 2541, 2967, 3447, 3996, 4618, 5321, 6117, 7018, 8027, 9162, 10438, 11858, 13450, 15225, 17205, 19400, 21849, 24573, 27584, 30916, 34612