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A224116
Number of idempotent 5X5 0..n matrices of rank 2.
0
3070, 30410, 136990, 467290, 1240310, 2986210, 6260470, 12345410, 22576030, 39299170, 64929590, 104218930, 160450990, 240932330, 352487350
OFFSET
1,1
EXAMPLE
Some solutions for n=3
..0..0..0..0..0....0..0..0..0..0....1..2..1..0..0....0..0..1..3..0
..2..1..0..2..1....3..1..2..3..0....0..0..0..0..0....0..0..0..3..3
..1..0..1..1..0....0..0..0..0..0....0..0..0..0..0....0..0..1..3..0
..0..0..0..0..0....0..0..0..0..0....0..0..0..1..0....0..0..0..0..0
..0..0..0..0..0....0..0..3..1..1....0..0..0..3..0....0..0..0..1..1
CROSSREFS
Row 5 of A224114.
Sequence in context: A274410 A274411 A224970 * A183726 A137485 A251786
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Apr 09 2013
STATUS
approved