A213797 Number of n X n 0..5 symmetric arrays with every row summing to floor(n*5/2)

1, 6, 96, 9522, 4843626, 13937940952, 212962858290086

Offset

1,2

Comments

Column 5 of A213800

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=4
..1..3..2..4....5..1..0..4....4..1..0..5....5..4..0..1....5..3..1..1
..3..3..1..3....1..5..4..0....1..1..5..3....4..4..0..2....3..3..4..0
..2..1..5..2....0..4..2..4....0..5..3..2....0..0..5..5....1..4..0..5
..4..3..2..1....4..0..4..2....5..3..2..0....1..2..5..2....1..0..5..4

Crossrefs

Sequence in context: A066319 A186269 A111826 * A285025 A288544 A064753

Adjacent sequences: A213794 A213795 A213796 * A213798 A213799 A213800

Keyword

nonn

Author

R. H. Hardin Jun 20 2012

Status

approved