The sequence e when b=[ 1,1,1,0,1,1,... ].

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =3a(6) =3a(7) =3a(8) =5a(9) =7a(10) =9a(11) =9a(12) =11a(13) =15a(14) =19a(15) =21a(16) =25a(17) =31a(18) =39a(19) =45a(20) =53a(21) =63a(22) =75a(23) =87a(24) =103a(25) =121a(26) =143a(27) =165a(28) =193a(29) =225