Number of loopless multigraphs with 8 nodes and n edges.

Terms

a(0) =1a(1) =1a(2) =3a(3) =8a(4) =23a(5) =64a(6) =197a(7) =588a(8) =1806a(9) =5509a(10) =16677a(11) =49505a(12) =143761a(13) =406091a(14) =1114890a(15) =2970964a(16) =7685972a(17) =19311709a(18) =47170674a(19) =112123118a(20) =259662333a(21) =586583731a(22) =1294143065a(23) =2791716176a(24) =5895027869a(25) =12198014683a(26) =24758285639a(27) =49339306519