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A204228 Number of (n+1)X7 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards 1
192474, 12097076, 694547816, 21958547501, 687853333430, 13629970952083, 271354063234561, 3835838251329000, 54453189904564756, 595162305293032209, 6513931380725003539, 58108694636514434194, 517777689314797178275 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A204230

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A254420 A254427 A253373 * A270971 A234455 A187676

Adjacent sequences:  A204225 A204226 A204227 * A204229 A204230 A204231

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 13 2012

STATUS

approved

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Last modified September 23 20:42 EDT 2021. Contains 347617 sequences. (Running on oeis4.)