A030766 Numbers k such that A030757(k) = 4.
5, 24, 30, 31, 44, 53, 68, 89, 90, 104, 131, 149, 154, 176, 179, 207, 240, 244, 246, 277, 288, 313, 315, 319, 322, 373, 401, 408, 409, 462, 504, 509, 511, 562, 621, 629, 634, 642, 650, 688, 693, 695, 704, 752, 754, 761, 778, 823
Offset: 1