

A359860


Number of regions among all distinct circles that can be constructed from a 2 X n square grid of points using only a compass.


6



3, 45, 231, 865, 2081, 4489, 8211, 14401, 22857, 35445, 51741, 74397, 102271, 138801, 182739, 238181, 303175, 383097
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OFFSET

1,1


COMMENTS

See A359859 for further details. No formula for a(n) is known.


LINKS



FORMULA



CROSSREFS



KEYWORD

nonn,more


AUTHOR



STATUS

approved



