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A222822
Number of idempotent 3X3 0..n matrices
1
50, 122, 218, 344, 488, 668, 860, 1088, 1334, 1610, 1898, 2234, 2570, 2942, 3338, 3764, 4196, 4676, 5156, 5684, 6224, 6788, 7364, 8000, 8630, 9290, 9974, 10694, 11414, 12194, 12962, 13778, 14606, 15458, 16334, 17264, 18176, 19124, 20096, 21116, 22124
OFFSET
1,1
COMMENTS
Row 3 of A222821
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0....1..0..0....1..0..0....1..0..0....1..0..0....0..0..0....0..0..0
..0..0..0....1..0..0....2..0..0....0..1..0....2..0..3....1..1..1....0..1..0
..0..0..0....0..0..0....0..0..1....2..1..0....0..0..1....0..0..0....0..1..0
CROSSREFS
Sequence in context: A044237 A044618 A248531 * A212226 A031397 A045181
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 09 2013
STATUS
approved