Position of n-th 2 in A007376.

Terms

a(0) =2a(1) =15a(2) =30a(3) =32a(4) =34a(5) =35a(6) =36a(7) =38a(8) =40a(9) =42a(10) =44a(11) =46a(12) =48a(13) =55a(14) =75a(15) =95a(16) =115a(17) =135a(18) =155a(19) =175a(20) =198a(21) =228a(22) =251a(23) =254a(24) =257a(25) =258a(26) =260a(27) =263a(28) =266a(29) =269