A030736 n-th number k such that s(k)=4, where s=A030727.

12, 27, 28, 38, 63, 65, 67, 81, 84, 100, 104, 121, 124, 146, 164, 170, 190, 197, 227, 251, 278, 287, 290, 297, 338, 371, 372, 378, 382, 418, 420, 428, 470, 473, 477, 529, 578, 583, 587, 648, 700, 711, 755, 759, 766, 768, 778, 846