Fibonacci sequence beginning 0, 15.

Terms

a(0) =0a(1) =15a(2) =15a(3) =30a(4) =45a(5) =75a(6) =120a(7) =195a(8) =315a(9) =510a(10) =825a(11) =1335a(12) =2160a(13) =3495a(14) =5655a(15) =9150a(16) =14805a(17) =23955a(18) =38760a(19) =62715a(20) =101475a(21) =164190a(22) =265665a(23) =429855a(24) =695520a(25) =1125375a(26) =1820895a(27) =2946270a(28) =4767165a(29) =7713435