The chalcogen sequence (a(n) = A018227(n)-2).

Terms

a(0) =8a(1) =16a(2) =34a(3) =52a(4) =84a(5) =116a(6) =166a(7) =216a(8) =288a(9) =360a(10) =458a(11) =556a(12) =684a(13) =812a(14) =974a(15) =1136a(16) =1336a(17) =1536a(18) =1778a(19) =2020a(20) =2308a(21) =2596a(22) =2934a(23) =3272a(24) =3664a(25) =4056a(26) =4506a(27) =4956a(28) =5468a(29) =5980