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A238307 Number of (n+1)X(2+1) 0..3 arrays with the maximum minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
1776, 20128, 227622, 2570594, 29039618, 328887234, 3724943100, 42156330796, 477092412942, 5400733421386, 61135784139176, 691996650421482, 7832804389781870, 88662745929663094, 1003604775495708714 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A238311

LINKS

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

R. H. Hardin, Empirical recurrence of order 76

FORMULA

Empirical recurrence of order 76 (see link above)

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A047826 A143995 A205938 * A233953 A282404 A167282

Adjacent sequences:  A238304 A238305 A238306 * A238308 A238309 A238310

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 24 2014

STATUS

approved

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Last modified September 19 05:33 EDT 2020. Contains 337176 sequences. (Running on oeis4.)