Number of cubic plane graphs with 2n nodes, minimal face size 3 and maximal face size 6.

Terms

a(0) =1a(1) =1a(2) =1a(3) =4a(4) =8a(5) =11a(6) =23a(7) =34a(8) =54a(9) =83a(10) =125a(11) =174a(12) =267a(13) =365a(14) =509a(15) =706a(16) =963a(17) =1270a(18) =1708a(19) =2204a(20) =2876a(21) =3695a(22) =4708a(23) =5925a(24) =7491a(25) =9255a(26) =11463a(27) =14083a(28) =17223a(29) =20857