Segmented numbers, or prime numbers of measurement.

Terms

a(0) =1a(1) =2a(2) =4a(3) =5a(4) =8a(5) =10a(6) =14a(7) =15a(8) =16a(9) =21a(10) =22a(11) =25a(12) =26a(13) =28a(14) =33a(15) =34a(16) =35a(17) =36a(18) =38a(19) =40a(20) =42a(21) =46a(22) =48a(23) =49a(24) =50a(25) =53a(26) =57a(27) =60a(28) =62a(29) =64