Numbers k such that A030737(k) = 4.

Terms

a(0) =6a(1) =7a(2) =18a(3) =19a(4) =38a(5) =48a(6) =50a(7) =65a(8) =82a(9) =83a(10) =123a(11) =148a(12) =173a(13) =175a(14) =201a(15) =204a(16) =237a(17) =262a(18) =265a(19) =272a(20) =291a(21) =294a(22) =302a(23) =306a(24) =341a(25) =349a(26) =396a(27) =435a(28) =437a(29) =445