A050106 a(n) = n-th number k such that b(k)<b(k+1), where b=A050104.

1, 2, 4, 5, 7, 8, 9, 11, 14, 15, 17, 19, 20, 21, 24, 25, 28, 29, 30, 32, 34, 36, 38, 40, 42, 43, 45, 47, 48, 49, 50, 52, 55, 56, 58, 61, 62, 64, 65, 68, 70, 72, 73, 75, 77, 78, 79, 80, 82, 85, 87, 89, 91, 92, 94, 96, 98, 100, 101, 103, 104