Number of connected bipartite graphs on n unlabeled nodes with a distinguished bipartite block.
A318870
Number of connected bipartite graphs on n unlabeled nodes with a distinguished bipartite block.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =2a(4) =4a(5) =10a(6) =27a(7) =88a(8) =328a(9) =1460a(10) =7799a(11) =51196a(12) =422521a(13) =4483460a(14) =62330116a(15) =1150504224a(16) =28434624153a(17) =945480850638
External references
- oeis: A318870