A030790 a(n)=least k such that s(k)=n, where s=A030787.

2, 3, 5, 1, 11, 13, 19, 22, 30, 36, 58, 39, 59, 50, 74, 90, 62, 150, 77, 132, 151, 94, 177, 152, 113, 178, 133, 209, 155, 270, 240, 181, 381, 273, 308, 210, 346, 384, 473, 241, 428, 386, 274, 430, 431, 310, 755, 580, 348, 479, 694, 388