Where powers of 2 occur in the union of squares and powers of 2.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =8a(6) =11a(7) =15a(8) =20a(9) =27a(10) =37a(11) =51a(12) =70a(13) =97a(14) =135a(15) =189a(16) =264a(17) =371a(18) =521a(19) =734a(20) =1034a(21) =1459a(22) =2059a(23) =2908a(24) =4108a(25) =5805a(26) =8205a(27) =11599a(28) =16398a(29) =23185