A333896 Number of unlabeled loopless multigraphs with n nodes of degree 5 or less.

1, 1, 6, 20, 128, 800, 7252, 78063, 1059783, 17120947, 324989973, 7091405557, 175501697220, 4869895326986, 150149181850071, 5105014674244446, 190170557622677435, 7718536219718200652, 339658159537506154540, 16135241804080190069164, 824225772252119571338949

Offset

0,3

Links

Table of n, a(n) for n=0..20.

Crossrefs

Column k=5 of A333893.

Sequence in context: A245855 A074012 A074013 * A114959 A000386 A000387

Adjacent sequences: A333893 A333894 A333895 * A333897 A333898 A333899

Keyword

nonn

Author

Andrew Howroyd, Apr 08 2020

Status

approved