Numbers k such that the k-th triangular number is a binary palindrome.

Terms

a(0) =0a(1) =1a(2) =2a(3) =5a(4) =6a(5) =9a(6) =17a(7) =21a(8) =25a(9) =33a(10) =42a(11) =65a(12) =90a(13) =129a(14) =170a(15) =257a(16) =341a(17) =357a(18) =450a(19) =513a(20) =693a(21) =893a(22) =1025a(23) =1365a(24) =1397a(25) =1445a(26) =1617a(27) =1670a(28) =1750a(29) =2049