A249696 Number of distinct permanental polynomials among all simple undirected graphs on n nodes.

1, 1, 2, 4, 11, 34, 153, 1035, 12247, 274153, 11999059, 1018915198

Offset

0,3

Links

Table of n, a(n) for n=0..11.

Shunyi Liu, Jinjun Ren, Enumeration of copermanental graphs, arXiv:1411.0184 [math.CO], (1-November-2014)

Crossrefs

Cf. A082104 (distinct characteristic polynomials).

Sequence in context: A071115 A357891 A217043 * A156809 A215620 A076317

Adjacent sequences: A249693 A249694 A249695 * A249697 A249698 A249699

Keyword

nonn,hard,more

Author

Joerg Arndt, Nov 04 2014

Status

approved