Write n-th semiprime in binary, sum as if decimal numbers.

Terms

a(0) =100a(1) =210a(2) =1211a(3) =2221a(4) =3331a(5) =4442a(6) =14543a(7) =24653a(8) =35654a(9) =46664a(10) =146665a(11) =246675a(12) =346686a(13) =446796a(14) =546907a(15) =648017a(16) =758018a(17) =868029a(18) =978140a(19) =1089141a(20) =1200151a(21) =1311261a(22) =2311262a(23) =3311363a(24) =4312373a(25) =5313474a(26) =6323484a(27) =7333585a(28) =8343695