A030611 a(n)=least k such that the base 6 representation of n begins at s(k), where s=A030604.

1, 2, 3, 12, 4, 22, 38, 1, 8, 26, 43, 50, 7, 6, 2, 30, 17, 237, 14, 35, 9, 70, 3, 19, 12, 27, 34, 33, 31, 112, 4, 29, 56, 11, 44, 247, 201, 22, 387, 103, 634, 246, 134, 38, 97, 135, 42, 49, 293, 5, 1, 125, 171, 308, 13, 98, 8, 193, 65, 212, 95