Binary palindromic numbers with only two 0 bits, both in the middle.

A220236

Binary palindromic numbers with only two 0 bits, both in the middle.

Terms

    a(0) =9a(1) =51a(2) =231a(3) =975a(4) =3999a(5) =16191a(6) =65151a(7) =261375a(8) =1047039a(9) =4191231a(10) =16771071a(11) =67096575a(12) =268410879a(13) =1073692671a(14) =4294868991a(15) =17179672575a(16) =68719083519a(17) =274877120511

External references