A297671 Number of chordless cycles in the n-triangular grid graph.

0, 0, 0, 1, 7, 41, 260, 1930, 17463, 200008, 3026192, 62212319, 1742874972, 65794989216, 3314857545154, 222226981778153, 19858056830333695, 2371636836808937036, 378993965527624639893

Offset: 0

Author

Eric W. Weisstein, Jan 02 2018

Keywords

• nonn
• more

Links

• Eric Weisstein's World of Mathematics, Chordless Cycle
• Eric Weisstein's World of Mathematics, Triangular Grid Graph

Crossrefs

Cf. A112676, A266513.

Extensions

a(7)-a(18) from Andrew Howroyd, Jan 08 2018