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A351684
Number of convex polydrafters with n cells. These are proper polydrafters, whose cells conform to the polyiamond grid. Mirror images are identified.
0
1, 4, 3, 7, 7, 13, 9, 15, 9, 14, 12, 27, 19, 29, 26, 29, 20, 36, 26, 48, 42, 46, 44, 53, 32, 54, 49, 69, 62, 82, 58, 72, 60, 67, 73, 119, 85, 106, 99, 93, 85, 126, 100, 152, 132, 142, 125, 145, 107, 142, 147, 185, 161, 194, 146, 169, 160, 186, 192, 271, 195, 251, 209, 199, 207, 260, 230, 330, 272, 275, 255, 293
OFFSET
1,2
COMMENTS
These are conforming polydrafters as in A056842, as defined by Ed Pegg. They do not include extended polydrafters. See the Logelium link.
LINKS
Bernd Karl Rennhak, Polydrafter, at Logelium.
EXAMPLE
For n=2 there are 6 proper didrafters. Four are convex: the rectangle, the kite, the moniamond (equilateral triangle), and the monopons (30°-30°-120° triangle). Thus a(2) = 4.
CROSSREFS
KEYWORD
nonn
AUTHOR
George Sicherman, May 16 2022
STATUS
approved