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A333036
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Number of edges in an equal-armed cross with arms of length n (see Comments in A331456 for definition).
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5
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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
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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COMMENTS
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See the links in A331456 for images of the crosses.
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LINKS
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Lars Blomberg, Table of n, a(n) for n = 0..48
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CROSSREFS
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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
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KEYWORD
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nonn
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AUTHOR
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Scott R. Shannon and N. J. A. Sloane, Mar 06 2020
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EXTENSIONS
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a(11) and beyond from Lars Blomberg, May 30 2020
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STATUS
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approved
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