Number of unlabeled and connected graphs on n vertices which are semi-P4-sparse (G is semi-P4-sparse iff G has no induced P5, House, or complement of a fork).
A079469
Number of unlabeled and connected graphs on n vertices which are semi-P4-sparse (G is semi-P4-sparse iff G has no induced P5, House, or complement of a fork).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =18a(5) =63a(6) =213a(7) =763a(8) =2716a(9) =9874a(10) =36162a(11) =134328a(12) =503500a(13) =1905675a(14) =7267269a(15) =27906062
External references
- oeis: A079469