Number of bipartite partitions.

Terms

a(0) =4a(1) =11a(2) =26a(3) =52a(4) =98a(5) =171a(6) =289a(7) =467a(8) =737a(9) =1131a(10) =1704a(11) =2515a(12) =3661a(13) =5246a(14) =7430a(15) =10396a(16) =14405a(17) =19760a(18) =26884a(19) =36269a(20) =48583a(21) =64614a(22) =85399a(23) =112170a(24) =146526a(25) =190362a(26) =246099a(27) =316621a(28) =405556a(29) =517224