a(n) is the concatenation of terms in the n-th row of triangle A237048.

Terms

a(0) =1a(1) =1a(2) =11a(3) =10a(4) =11a(5) =101a(6) =110a(7) =100a(8) =111a(9) =1001a(10) =1100a(11) =1010a(12) =1100a(13) =1001a(14) =11101a(15) =10000a(16) =11000a(17) =10110a(18) =11000a(19) =10001a(20) =111001a(21) =100100a(22) =110000a(23) =101000a(24) =110010a(25) =100100a(26) =111001a(27) =1000001a(28) =1100000a(29) =1011100