A333036 Number of edges in an equal-armed cross with arms of length n (see Comments in A331456 for definition).

8, 172, 964, 3316, 8524, 18188, 34540, 59908, 97324, 150028, 221692, 316124, 438364, 592364, 784060, 1019468, 1304996, 1644900, 2047412, 2519172, 3068556, 3704004, 4434044, 5265868, 6211652, 7276492, 8474484, 9813996, 11304292, 12958380, 14791124, 16810732

Offset

0,1

Comments

See the links in A331456 for images of the crosses.

Links

Lars Blomberg, Table of n, a(n) for n = 0..48

Crossrefs

Cf. A331456 (regions), A333035 (vertices), A333037 (n-gons), A274586 , A332600, A331765.

Sequence in context: A300805 A317566 A301444 * A247729 A333460 A221060

Adjacent sequences: A333033 A333034 A333035 * A333037 A333038 A333039

Keyword

nonn

Author

Scott R. Shannon and N. J. A. Sloane, Mar 06 2020

Extensions

a(11) and beyond from Lars Blomberg, May 30 2020

Status

approved