Results from a change in the rules leading to sequence A097357.

Terms

a(0) =1a(1) =3a(2) =4a(3) =14a(4) =21a(5) =53a(6) =69a(7) =237a(8) =321a(9) =867a(10) =1044a(11) =3638a(12) =5441a(13) =13667a(14) =17684a(15) =60854a(16) =81921a(17) =221187a(18) =266244a(19) =931854a(20) =1397781a(21) =3495477a(22) =4542789a(23) =15555437a(24) =21053441