a(n) = a(n-2)+a(n-4); a(1)=a(4)=101, a(2)=a(3)=10.

Terms

a(0) =101a(1) =10a(2) =10a(3) =101a(4) =111a(5) =111a(6) =121a(7) =212a(8) =232a(9) =323a(10) =353a(11) =535a(12) =585a(13) =858a(14) =938a(15) =1393a(16) =1523a(17) =2251a(18) =2461a(19) =3644a(20) =3984a(21) =5895a(22) =6445a(23) =9539a(24) =10429a(25) =15434a(26) =16874a(27) =24973a(28) =27303a(29) =40407