Position of n-th 0 in A031235.

Terms

a(0) =0a(1) =5a(2) =15a(3) =25a(4) =35a(5) =45a(6) =46a(7) =49a(8) =52a(9) =55a(10) =58a(11) =60a(12) =75a(13) =90a(14) =105a(15) =120a(16) =121a(17) =124a(18) =127a(19) =130a(20) =133a(21) =135a(22) =150a(23) =165a(24) =180a(25) =195a(26) =196a(27) =199a(28) =202a(29) =205