Numbers k such that cos(k-1) <= 0 and cos(k) > 0.

Terms

a(0) =5a(1) =11a(2) =18a(3) =24a(4) =30a(5) =37a(6) =43a(7) =49a(8) =55a(9) =62a(10) =68a(11) =74a(12) =81a(13) =87a(14) =93a(15) =99a(16) =106a(17) =112a(18) =118a(19) =125a(20) =131a(21) =137a(22) =143a(23) =150a(24) =156a(25) =162a(26) =169a(27) =175a(28) =181a(29) =187