Greatest integer k such that k/2^n < 1/e.

Terms

a(0) =0a(1) =0a(2) =1a(3) =2a(4) =5a(5) =11a(6) =23a(7) =47a(8) =94a(9) =188a(10) =376a(11) =753a(12) =1506a(13) =3013a(14) =6027a(15) =12054a(16) =24109a(17) =48218a(18) =96437a(19) =192874a(20) =385749a(21) =771499a(22) =1542998a(23) =3085996a(24) =6171992a(25) =12343985a(26) =24687971a(27) =49375942a(28) =98751885a(29) =197503771