Numbers n such that n*(n+1)/2 is the juxtaposition of two identical strings in binary representation.

A092739

Numbers n such that n*(n+1)/2 is the juxtaposition of two identical strings in binary representation.

Terms

    a(0) =2a(1) =4a(2) =5a(3) =8a(4) =9a(5) =16a(6) =17a(7) =32a(8) =33a(9) =44a(10) =64a(11) =65a(12) =90a(13) =128a(14) =129a(15) =171a(16) =256a(17) =257a(18) =512a(19) =513a(20) =702a(21) =1024a(22) =1025a(23) =2048a(24) =2049a(25) =2732a(26) =4096a(27) =4097a(28) =5542a(29) =8192

External references