Chimes made by clock striking the hour and half-hour.

Terms

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