a(n) = 5*Lucas(n).

Terms

a(0) =10a(1) =5a(2) =15a(3) =20a(4) =35a(5) =55a(6) =90a(7) =145a(8) =235a(9) =380a(10) =615a(11) =995a(12) =1610a(13) =2605a(14) =4215a(15) =6820a(16) =11035a(17) =17855a(18) =28890a(19) =46745a(20) =75635a(21) =122380a(22) =198015a(23) =320395a(24) =518410a(25) =838805a(26) =1357215a(27) =2196020a(28) =3553235a(29) =5749255