A245880 Number of distinct characteristic polynomials among all connected graphs on n nodes.
1, 1, 2, 6, 21, 111, 821, 10423, 236064, 10375796
Offset: 1
Links
- Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs
- T. Hoppe and A. Petrone, Integer sequence discovery from small graphs, arXiv preprint arXiv:1408.3644 [math.CO], 2014.
- T. Hoppe and A. Petrone, Integer sequence discovery from small graphs, Discr. Appl. Math. 201 (2016) 172-181.
- Eric Weisstein's World of Mathematics, Characteristic Polynomial
Crossrefs
Cf. A082104 (simple graphs, including disconnected ones, with unique characteristic polynomials).
Extensions
Terms corrected by Eric M. Schmidt, Mar 20 2015