A358856 Number of (undirected) cycles in the graph C_6 X C_n.

35205, 1165194, 34846271, 995818716, 27888940001, 773821636750, 21378607696815, 589724385779004, 16270311004670729, 449476421435825046, 12442365158796491483, 345293706994488530008, 9609116953522118190009, 268189777386676703675238, 7507073356371047897526119, 210735605847160867677182616

Offset

3,1

Links

Table of n, a(n) for n=3..18.

Eric Weisstein's World of Mathematics, Graph Cycle

Eric Weisstein's World of Mathematics, Torus Grid Graph

Crossrefs

Cf. A296527, A339074, A339075, A358855.

Cf. A358811.

Sequence in context: A031855 A186567 A235279 * A133282 A257724 A254016

Adjacent sequences: A358853 A358854 A358855 * A358857 A358858 A358859

Keyword

nonn,hard

Author

Seiichi Manyama, Dec 03 2022

Extensions

a(7)-a(18) from Andrew Howroyd, Jan 28 2023

Status

approved