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A213803 Number of 5X5 0..n symmetric arrays with all rows summing to floor(n*5/2) 1
112, 5673, 87932, 815263, 4843626, 22698959, 84662388, 275879169, 782758404, 2036181209, 4827542558, 10773876919, 22498928491, 44939366943, 85390966217, 156814686053, 276999175867, 476278194021, 793826178700, 1294496520831 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A213800

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..23

EXAMPLE

Some solutions for n=4

..0..0..2..4..4....1..4..0..4..1....1..1..0..4..4....0..3..4..0..3

..0..0..4..2..4....4..4..0..1..1....1..3..1..1..4....3..2..2..1..2

..2..4..1..2..1....0..0..3..3..4....0..1..3..4..2....4..2..2..1..1

..4..2..2..1..1....4..1..3..1..1....4..1..4..1..0....0..1..1..4..4

..4..4..1..1..0....1..1..4..1..3....4..4..2..0..0....3..2..1..4..0

CROSSREFS

Sequence in context: A103860 A265660 A271032 * A291214 A035813 A223613

Adjacent sequences:  A213800 A213801 A213802 * A213804 A213805 A213806

KEYWORD

nonn

AUTHOR

R. H. Hardin Jun 20 2012

STATUS

approved

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Last modified November 22 16:26 EST 2019. Contains 329396 sequences. (Running on oeis4.)