A050115 a(n) = n-th number k such that b(k)>b(k+1), where b=A050108.

3, 4, 6, 8, 12, 13, 14, 16, 18, 19, 21, 23, 25, 26, 29, 30, 32, 37, 38, 39, 40, 41, 45, 46, 47, 49, 50, 52, 54, 56, 58, 60, 61, 63, 64, 67, 68, 70, 71, 73, 75, 78, 80, 81, 82, 84, 86, 88, 90, 91, 92, 95, 97, 98, 100, 103, 105, 106, 107, 109