A268474 Number of 5Xn arrays containing n copies of 0..5-1 with column sums equal.

120, 19800, 4140000, 1007460000, 269568000000, 76711698000000, 22777407360000000, 6975554646600000000, 2187027926856000000000, 698458000786920000000000, 226405769680425600000000000

Offset

1,1

Comments

Row 5 of A268472.

Links

R. H. Hardin, Table of n, a(n) for n = 1..50

Example

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

Crossrefs

Cf. A268472.

Sequence in context: A250511 A151985 A229605 * A363516 A289566 A229693

Adjacent sequences: A268471 A268472 A268473 * A268475 A268476 A268477

Keyword

nonn

Author

R. H. Hardin, Feb 05 2016

Status

approved