Number of nonisomorphic minimal triangle graphs.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =19a(6) =48a(7) =117a(8) =307a(9) =821a(10) =2277a(11) =6437a(12) =18634a(13) =54775a(14) =163703a(15) =495529a(16) =1518706a(17) =4703848a(18) =14714754a(19) =46444979a(20) =147832051a(21) =474229588a(22) =1532565644