Number of non-isomorphic multiset partitions of weight n with exactly 2 distinct vertices, or with exactly 2 (not necessarily distinct) edges.
A323656
Number of non-isomorphic multiset partitions of weight n with exactly 2 distinct vertices, or with exactly 2 (not necessarily distinct) edges.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =4a(4) =14a(5) =28a(6) =69a(7) =134a(8) =285a(9) =536a(10) =1050a(11) =1918a(12) =3566a(13) =6346a(14) =11363a(15) =19771a(16) =34405a(17) =58677a(18) =99797a(19) =167223a(20) =279032a(21) =460264a(22) =755560a(23) =1228849a(24) =1988680a(25) =3193513a(26) =5103104a(27) =8100712a(28) =12798207a(29) =20102883
External references
- oeis: A323656