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A235544 Number of (n+1)X(4+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise 1
378, 4348, 61401, 758256, 9618173, 108503097, 1173374675, 11635568187, 109453308692, 966932051675, 8150811220681, 65564257527282, 507436990647073, 3788110079413002, 27409572083960061, 192741633876530444 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A235548

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

..1..0..0..0..1....0..0..0..0..1....0..1..0..0..0....0..1..0..0..1

..0..0..1..1..0....0..0..0..1..1....0..0..0..1..1....0..0..0..0..1

..1..0..1..1..1....1..0..1..0..1....0..0..1..1..1....0..1..1..1..0

..1..0..0..1..0....0..0..1..1..0....0..0..1..1..0....1..0..0..1..1

CROSSREFS

Sequence in context: A154078 A047632 A033699 * A325848 A248915 A225839

Adjacent sequences:  A235541 A235542 A235543 * A235545 A235546 A235547

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 12 2014

STATUS

approved

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Last modified October 17 02:45 EDT 2021. Contains 348048 sequences. (Running on oeis4.)