Even cyclops numbers.

Terms

a(0) =0a(1) =102a(2) =104a(3) =106a(4) =108a(5) =202a(6) =204a(7) =206a(8) =208a(9) =302a(10) =304a(11) =306a(12) =308a(13) =402a(14) =404a(15) =406a(16) =408a(17) =502a(18) =504a(19) =506a(20) =508a(21) =602a(22) =604a(23) =606a(24) =608a(25) =702a(26) =704a(27) =706a(28) =708a(29) =802