Fibonacci sequence beginning 7, 15.

Terms

a(0) =7a(1) =15a(2) =22a(3) =37a(4) =59a(5) =96a(6) =155a(7) =251a(8) =406a(9) =657a(10) =1063a(11) =1720a(12) =2783a(13) =4503a(14) =7286a(15) =11789a(16) =19075a(17) =30864a(18) =49939a(19) =80803a(20) =130742a(21) =211545a(22) =342287a(23) =553832a(24) =896119a(25) =1449951a(26) =2346070a(27) =3796021a(28) =6142091a(29) =9938112