Position of n-th 0 in A030308.

Terms

a(0) =0a(1) =2a(2) =6a(3) =7a(4) =10a(5) =12a(6) =18a(7) =19a(8) =20a(9) =23a(10) =24a(11) =26a(12) =28a(13) =32a(14) =34a(15) =35a(16) =39a(17) =42a(18) =50a(19) =51a(20) =52a(21) =53a(22) =56a(23) =57a(24) =58a(25) =60a(26) =62a(27) =63a(28) =67a(29) =68