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A235505 Number of (n+1)X(4+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise 1
343500, 123132965, 51929974331, 19569523022916, 7279199801456820, 2418013523229434607, 752730448313327438362, 214831987907070104809673, 57553185165696640731112540, 14455366843587099077484369123 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A235506

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..17

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A306796 A029568 A235746 * A235668 A235664 A235429

Adjacent sequences:  A235502 A235503 A235504 * A235506 A235507 A235508

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 11 2014

STATUS

approved

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Last modified February 26 02:42 EST 2021. Contains 341619 sequences. (Running on oeis4.)