A201340 - OEIS

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A201340

Number of nX2 0..4 arrays with every row and column running average nondecreasing rightwards and downwards but some diagonal running average having a decrease

0, 0, 15, 213, 2007, 15497, 106589, 680287, 4118949, 23981337, 135473879, 747163898, 4040984182, 21504391182, 112888169123, 585765427216, 3009175376793, 15324419276531, 77445651022458, 388752941316532

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

Column 2 of A201345

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..96

EXAMPLE

Some solutions for n=6

..0..1....1..1....0..0....1..2....0..0....0..0....0..1....0..0....0..0....0..2

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

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