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A194191 Number of ways to arrange 6 indistinguishable points on an n X n square grid so that no three points are collinear at any angle. 3
0, 0, 2, 998, 36698, 620210, 5367308, 34678364, 169259212, 682686652, 2356999994, 7294368210, 20227526910, 52008171998, 124422857864, 279767468172, 596674510744, 1218556387684, 2385034544810, 4509309201242 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Column 6 of A194193.
LINKS
EXAMPLE
Some solutions for 4 X 4:
..1..0..1..0....0..1..1..0....1..0..0..1....0..1..0..0....0..1..0..1
..0..0..0..1....1..0..0..0....0..0..1..1....0..0..1..1....0..0..0..1
..0..1..0..0....0..1..1..0....0..0..0..0....0..0..1..0....0..0..1..0
..0..0..1..1....1..0..0..0....0..1..1..0....1..0..0..1....1..0..1..0
CROSSREFS
Sequence in context: A337309 A172386 A079233 * A190579 A271527 A214543
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 18 2011
STATUS
approved

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Last modified June 17 03:50 EDT 2024. Contains 373432 sequences. (Running on oeis4.)