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 A224120 Number of idempotent 6X6 0..n matrices of rank 4 0
 12405, 260235, 2273505, 12775065, 52968495, 178881705, 514370175, 1311704565, 3033506835, 6484756785 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 6 of A224118 LINKS EXAMPLE Some solutions for n=3 ..0..0..3..0..0..0....1..0..1..1..0..0....1..0..0..0..1..0....1..0..0..0..0..0 ..0..1..0..0..0..0....0..1..1..1..0..0....0..1..0..0..1..0....0..1..0..0..0..0 ..0..0..1..0..0..0....0..0..0..0..0..0....0..0..1..0..0..0....0..0..1..0..0..0 ..0..0..0..1..0..0....0..0..0..0..0..0....3..0..2..0..3..0....2..1..0..0..0..3 ..0..0..0..0..0..0....0..0..3..1..1..0....0..0..0..0..0..0....0..0..2..0..0..1 ..0..0..0..0..1..1....0..0..1..0..0..1....0..0..0..0..0..1....0..0..0..0..0..1 CROSSREFS Sequence in context: A061731 A278892 A248084 * A233964 A156116 A068676 Adjacent sequences: A224117 A224118 A224119 * A224121 A224122 A224123 KEYWORD nonn AUTHOR R. H. Hardin Apr 09 2013 STATUS approved

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Last modified February 3 18:43 EST 2023. Contains 360044 sequences. (Running on oeis4.)