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A213960 Number of n X n 0..6 matrices with row and column i=1..n having sum <= i*6. 0
7, 980, 3323712, 256652587891, 447939229940051654, 17583943206407091985366455 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A213962.
LINKS
EXAMPLE
Some solutions for n=4
..0..2..3..0....1..2..0..0....2..3..0..0....1..1..3..0....5..0..0..1
..0..5..5..0....1..4..0..1....0..3..1..5....1..1..6..0....1..0..1..4
..5..0..3..6....1..5..3..3....0..3..4..4....4..4..1..0....0..1..3..4
..0..0..4..5....0..0..1..0....3..0..4..1....0..5..2..5....0..4..6..6
CROSSREFS
Cf. A213962.
Sequence in context: A286913 A201070 A332197 * A173852 A062841 A349736
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 28 2012
STATUS
approved

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Last modified May 24 12:09 EDT 2024. Contains 372773 sequences. (Running on oeis4.)