Greatest integer k such that k/2^n < log 2.

Terms

a(0) =0a(1) =1a(2) =2a(3) =5a(4) =11a(5) =22a(6) =44a(7) =88a(8) =177a(9) =354a(10) =709a(11) =1419a(12) =2839a(13) =5678a(14) =11356a(15) =22713a(16) =45426a(17) =90852a(18) =181704a(19) =363408a(20) =726817a(21) =1453634a(22) =2907269a(23) =5814539a(24) =11629079a(25) =23258159a(26) =46516319a(27) =93032639a(28) =186065279a(29) =372130558