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A199126 Number of nX1 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and no element equal to any horizontal or vertical neighbor 2
1, 1, 1, 3, 6, 5, 19, 37, 29, 124, 240, 182, 834, 1614, 1198, 5746, 11137, 8142, 40336, 78332, 56620, 287358, 559134, 400598, 2071558, 4038130, 2872754, 15079270, 29443040, 20824778, 110653854, 216379650, 152303410, 817542980, 1600817660 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Column 1 of A199133

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

FORMULA

Conjecture: a(3n) = A190917(n). - R. J. Mathar, Nov 01 2015

EXAMPLE

All solutions for n=5

..0....0....0....0....0....0

..1....1....1....1....1....1

..2....2....2....0....2....0

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

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

CROSSREFS

Sequence in context: A048724 A292682 A328403 * A247569 A115389 A303564

Adjacent sequences:  A199123 A199124 A199125 * A199127 A199128 A199129

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 03 2011

STATUS

approved

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Last modified April 3 17:03 EDT 2020. Contains 333197 sequences. (Running on oeis4.)