A185203 Number of disconnected 10-regular graphs with n nodes.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 11, 550, 806174, 2585947720, 9802278927562, 42709859521915286, 214798119408798346811, 1251607430636395979871600, 8463468717232507491862780325, 66406919318277846825588474735084

Offset

0,25

Links

Table of n, a(n) for n=0..33.

Jason Kimberley, Index of sequences counting disconnected k-regular simple graphs with girth at least g

Crossrefs

10-regular simple graphs: A014382 (connected), this sequence (disconnected).

Disconnected regular simple graphs: A068932 (any degree), A068933 (triangular array), specified degree k: A165652 (k=2), A165653 (k=3), A033483 (k=4), A165655 (k=5), A165656 (k=6), A165877 (k=7), A165878 (k=8), A185293 (k=9), this sequence (k=10), A185213 (k=11).

Sequence in context: A358162 A049654 A179897 * A363460 A265978 A263184

Adjacent sequences: A185200 A185201 A185202 * A185204 A185205 A185206

Keyword

nonn,hard

Author

Jason Kimberley, Jan 26 2012

Extensions

Terms a(29) and beyond from Andrew Howroyd, May 20 2020

Status

approved