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A236894 Number of (n+1) X (n+1) 0..2 arrays with the maximum plus the upper median of every 2 X 2 subblock equal. 1
81, 3205, 588459, 715994489, 3548382361732, 83535813974993711, 8373750980551070108806, 3763719053101058628172546403, 7388319149846129155540345883224889 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A236902.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..11

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Cf. A236902.

Sequence in context: A295651 A143652 A270343 * A231768 A017797 A205207

Adjacent sequences:  A236891 A236892 A236893 * A236895 A236896 A236897

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 01 2014

STATUS

approved

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Last modified August 8 18:58 EDT 2022. Contains 356016 sequences. (Running on oeis4.)