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A235853 Number of (n+1)X(4+1) 0..3 arrays with the upper median equal to the lower median in every 2X2 subblock 1
30624, 1629216, 73075844, 3725170008, 181155460364, 9088092971636, 449721286329228, 22443371269251304, 1115322432520498412, 55566546393457784844, 2764607117614633008924, 137659672638051730401176 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A235856

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A254976 A234791 A134118 * A237636 A236126 A236944

Adjacent sequences:  A235850 A235851 A235852 * A235854 A235855 A235856

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 16 2014

STATUS

approved

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Last modified July 25 13:05 EDT 2021. Contains 346290 sequences. (Running on oeis4.)