Numbers n such that the sum of the first n odd composites is palindromic in base 2.

Terms

a(0) =1a(1) =3a(2) =7a(3) =19a(4) =137a(5) =139a(6) =155a(7) =379a(8) =1509a(9) =4877a(10) =9509a(11) =13015a(12) =44819a(13) =75595a(14) =245027a(15) =804463a(16) =1082053a(17) =1154293a(18) =5802669a(19) =10186839a(20) =52333761a(21) =81509017a(22) =130656729a(23) =375417331a(24) =476594459a(25) =1955429145a(26) =9051994251a(27) =12788782787