A140440 Number of n-node biconnected graphs with girth at least 5.

0, 0, 0, 0, 1, 1, 2, 5, 12, 40, 154, 766, 4672, 34547, 302185, 3073267, 35933851, 479768761, 7284446498, 125435333136

Offset: 1

Author

Brendan McKay, Jun 17 2008

Keywords

• nonn
• more

Examples

			The 5 graphs of order 8 are:
0: 4 6; 1: 5 6; 2: 5 7; 3: 6 7; 4: 0 7; 5: 1 2; 6: 0 1 3; 7: 2 3 4;
0: 4 5; 1: 4 6; 2: 5 7; 3: 6 7; 4: 0 1; 5: 0 2; 6: 1 3; 7: 2 3;
0: 4 5; 1: 4 6; 2: 5 7; 3: 6 7; 4: 0 1 7; 5: 0 2; 6: 1 3; 7: 2 3 4;
0: 4 5; 1: 4 7; 2: 5 6; 3: 6 7; 4: 0 1 6; 5: 0 2 7; 6: 2 3 4; 7: 1 3 5;
0: 3 6; 1: 4 6; 2: 5 6; 3: 0 7; 4: 1 7; 5: 2 7; 6: 0 1 2; 7: 3 4 5.
		

Crossrefs

Cf. A126757.

Extensions

a(18)-a(20) from Brendan McKay, Jun 13 2021