Number of n-vertex, 2-edge multigraphs that are not nesting. Number of n-vertex, 2-edge multigraphs that are not crossing.
A326278
Number of n-vertex, 2-edge multigraphs that are not nesting. Number of n-vertex, 2-edge multigraphs that are not crossing.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =9a(4) =34a(5) =90a(6) =195a(7) =371a(8) =644a(9) =1044a(10) =1605a(11) =2365a(12) =3366a(13) =4654a(14) =6279a(15) =8295a(16) =10760a(17) =13736a(18) =17289a(19) =21489a(20) =26410a(21) =32130a(22) =38731a(23) =46299a(24) =54924a(25) =64700a(26) =75725a(27) =88101a(28) =101934a(29) =117334
External references
- oeis: A326278