A201392 Number of nX7 0..3 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other

4, 9424, 19735330, 18131486831, 214888479967271

Offset

1,1

Comments

Column 7 of A201393

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A116271 A274551 A257281 * A058417 A352497 A191592

Adjacent sequences: A201389 A201390 A201391 * A201393 A201394 A201395

Keyword

nonn

Author

R. H. Hardin Nov 30 2011

Status

approved