Size of maximal triangulation of an n-antiprism with regular polygonal base.

Terms

a(0) =4a(1) =8a(2) =12a(3) =17a(4) =22a(5) =28a(6) =34a(7) =41a(8) =48a(9) =56a(10) =64a(11) =73a(12) =82a(13) =92a(14) =102a(15) =113a(16) =124a(17) =136a(18) =148a(19) =161a(20) =174a(21) =188a(22) =202a(23) =217a(24) =232a(25) =248a(26) =264a(27) =281a(28) =298a(29) =316