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A333035 Number of vertices in an equal-armed cross with arms of length n (see Comments in A331456 for definition). 7
5, 69, 397, 1417, 3717, 8009, 15361, 26777, 43697, 67597, 100245, 143177, 199009, 269197, 356789, 464577, 595521, 751129, 935825, 1151881, 1403953, 1695765, 2031485, 2413337, 2848373, 3337781, 3888917, 4505277, 5191557, 5952313, 6796713, 7725945, 8747121 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
See the links in A331456 for images of the crosses.
LINKS
CROSSREFS
Cf. A331456 (regions), A333036 (edges), A333037 (n-gons), A092866, A332599, A007569.
Sequence in context: A355086 A337951 A092817 * A333459 A362101 A307700
KEYWORD
nonn
AUTHOR
EXTENSIONS
a(11) and beyond from Lars Blomberg, May 30 2020
STATUS
approved

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Last modified March 18 22:09 EDT 2024. Contains 370951 sequences. (Running on oeis4.)