Number of connected balanced simple signed graphs on n unlabeled nodes.

A318590

Number of connected balanced simple signed graphs on n unlabeled nodes.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =28a(5) =177a(6) =1982a(7) =33997a(8) =1020516a(9) =54570672a(10) =5347070228a(11) =967135763525

External references