Position of n-th 0 in A031018.

Terms

a(0) =5a(1) =19a(2) =33a(3) =47a(4) =48a(5) =50a(6) =53a(7) =56a(8) =69a(9) =90a(10) =111a(11) =122a(12) =125a(13) =128a(14) =132a(15) =153a(16) =174a(17) =194a(18) =195a(19) =197a(20) =200a(21) =203a(22) =216a(23) =237a(24) =258a(25) =269a(26) =272a(27) =275a(28) =279a(29) =300