Length of n-th run of composite numbers in A376198.

Terms

a(0) =5a(1) =11a(2) =25a(3) =50a(4) =108a(5) =217a(6) =450a(7) =915a(8) =1862a(9) =3757a(10) =7570a(11) =15258a(12) =30742a(13) =61859a(14) =124351a(15) =249935a(16) =502006a(17) =1007810a(18) =2022756a(19) =4058076a(20) =8139739a(21) =16322673a(22) =32724281a(23) =65595781a(24) =131463443a(25) =263434417a(26) =527812727a(27) =1057396420a(28) =2118099530a(29) =4242416336