A333460 Number of edges in an diagonal-edged (or diamond-shaped) checkerboard with width and height 2*n-1 (see Comments in A333434 for definition).

8, 172, 1864, 9396, 28188, 72688, 153240, 269680, 500344, 795344, 1158752, 1820428, 2506948, 3477052, 4772708, 6313892, 8116916, 10200156, 13320308, 16199876, 20189488, 24692976, 28950448, 36096712, 41795388, 49216724, 58997920

Offset

1,1

Comments

See A333434 for the definition and images of the checkerboard.

Links

Table of n, a(n) for n=1..27.

Crossrefs

Cf. A333434 (regions), A333458 (n-gons), A333459 (vertices), A333027, A333036, A333283.

Sequence in context: A301444 A333036 A247729 * A221060 A303285 A061492

Adjacent sequences: A333457 A333458 A333459 * A333461 A333462 A333463

Keyword

nonn,more

Author

Scott R. Shannon and N. J. A. Sloane, Mar 22 2020

Extensions

a(8)-a(27) from Lars Blomberg, Jun 03 2020

Status

approved