Position of n-th 2 in A030548.

Terms

a(0) =2a(1) =11a(2) =18a(3) =20a(4) =22a(5) =23a(6) =24a(7) =26a(8) =28a(9) =35a(10) =47a(11) =59a(12) =74a(13) =92a(14) =103a(15) =106a(16) =109a(17) =110a(18) =112a(19) =115a(20) =118a(21) =128a(22) =146a(23) =164a(24) =174a(25) =177a(26) =180a(27) =182a(28) =183a(29) =186