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A235852 Number of (n+1)X(3+1) 0..3 arrays with the upper median equal to the lower median in every 2X2 subblock 1
4524, 121244, 2848572, 73075844, 1811192156, 45872598284, 1149967012292, 29010506163148, 729346430166612, 18375276080260980, 462368150916799188, 11643521929920219196, 293068046135275777448, 7378831046335957309140 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A235856

LINKS

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

R. H. Hardin, Empirical recurrence of order 43

FORMULA

Empirical recurrence of order 43 (see link above)

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A234425 A209955 A104845 * A138731 A250450 A234171

Adjacent sequences:  A235849 A235850 A235851 * A235853 A235854 A235855

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 16 2014

STATUS

approved

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Last modified November 17 08:39 EST 2019. Contains 329217 sequences. (Running on oeis4.)