A sequence for measuring seconds: read it aloud.

Terms

a(0) =1a(1) =1000a(2) =2a(3) =1000a(4) =3a(5) =1000a(6) =4a(7) =1000a(8) =5a(9) =1000a(10) =6a(11) =1000a(12) =7a(13) =1000a(14) =8a(15) =1000a(16) =9a(17) =1000a(18) =10a(19) =1000a(20) =11a(21) =1000a(22) =12a(23) =1000a(24) =13a(25) =1000a(26) =14a(27) =1000a(28) =15a(29) =1000