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A224527 Number of idempotent 5X5 0..n matrices of rank 1 0
405, 2155, 5845, 13525, 24575, 44545, 69195, 107925, 156505, 223355, 301605, 413755, 535845, 694695, 882245 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 5 of A224524
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0..0..0....0..3..0..2..1....0..0..0..0..0....0..0..0..0..0
..0..0..0..0..0....0..0..0..0..0....3..1..1..1..3....1..0..0..0..1
..2..3..0..1..3....0..3..0..2..1....0..0..0..0..0....2..0..0..0..2
..2..3..0..1..3....0..0..0..0..0....0..0..0..0..0....3..0..0..0..3
..0..0..0..0..0....0..3..0..2..1....0..0..0..0..0....1..0..0..0..1
CROSSREFS
Sequence in context: A267893 A151745 A204636 * A219147 A239541 A187134
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 09 2013
STATUS
approved

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Last modified February 29 01:59 EST 2024. Contains 370401 sequences. (Running on oeis4.)