Number of self-dual signed graphs with n nodes. Also number of self-complementary 2-multigraphs on n nodes.
A004104
Number of self-dual signed graphs with n nodes. Also number of self-complementary 2-multigraphs on n nodes.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =20a(5) =86a(6) =662a(7) =8120a(8) =171526a(9) =5909259a(10) =348089533a(11) =33883250874
External references
- oeis: A004104