A348818 a(n) = number of chord labeled loopless diagrams by number of K_5.

0, 1, 866, 4446741, 55279816356, 1450728060971387, 72078730629785795963, 6235048155225093080061949, 879601407931825739964190440635, 192100729970218737700046212217095291, 62258393664270652226502315136978421947948, 28913744296806659870889046765907226809528931041

Offset: 1

Author

Michael De Vlieger, Nov 01 2021

Keywords

• nonn

Links

• Andrew Howroyd, Table of n, a(n) for n = 1..100
• Evgeniy Krasko, Igor Labutin, and Alexander Omelchenko, Enumeration of Labelled and Unlabelled Hamiltonian Cycles in Complete k-partite Graphs, arXiv:1709.03218 [math.CO], 2017. See Appendix Table 4.

Crossrefs

Row 5 of A369923.

Cf. A190833, A348819, A348820; A003436, A348813, A348815, A348821.

Extensions

a(9) onwards from Andrew Howroyd, Feb 05 2024