Even Padovan numbers.

Terms

a(0) =0a(1) =0a(2) =0a(3) =2a(4) =2a(5) =4a(6) =12a(7) =16a(8) =28a(9) =86a(10) =114a(11) =200a(12) =616a(13) =816a(14) =1432a(15) =4410a(16) =5842a(17) =10252a(18) =31572a(19) =41824a(20) =73396a(21) =226030a(22) =299426a(23) =525456a(24) =1618192a(25) =2143648a(26) =3761840a(27) =11584946a(28) =15346786a(29) =26931732