The number of simple unlabelled graphs with n nodes having no components of size 1 or 2.
A182157
The number of simple unlabelled graphs with n nodes having no components of size 1 or 2.
Terms
- a(0) =2a(1) =6a(2) =21a(3) =115a(4) =865a(5) =11180a(6) =261434a(7) =11719198a(8) =1006730374a(9) =164060444228
External references
- oeis: A182157