Number of practical numbers between powers of 2 where the practical numbers are A005153.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =6a(5) =8a(6) =15a(7) =25a(8) =52a(9) =89a(10) =166a(11) =299a(12) =551a(13) =1050a(14) =1954a(15) =3737a(16) =7098a(17) =13423a(18) =25262a(19) =48028a(20) =91636a(21) =175204a(22) =334986a(23) =643526a(24) =1240052a(25) =2394026a(26) =4620984a(27) =8946603a(28) =17299096a(29) =33473294