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A216026 Number of horizontal, vertical and diagonal neighbor colorings of the odd squares of an nX3 array with new integer colors introduced in row major order 1
1, 2, 4, 29, 97, 1534, 7050, 188835, 1084180, 42756208, 291120551, 15590248868, 121920095674, 8414029179365, 73953763887277, 6340176007793060, 61657373569634586, 6390402969619162909, 67948766672072844798 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A216031

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..41

EXAMPLE

Some solutions for n=4

..x..0..x....x..0..x....x..0..x....x..0..x....x..0..x....x..0..x....x..0..x

..1..x..2....1..x..2....1..x..2....1..x..2....1..x..2....1..x..2....1..x..2

..x..2..x....x..3..x....x..3..x....x..2..x....x..2..x....x..2..x....x..3..x

..0..x..1....0..x..4....4..x..5....3..x..0....2..x..1....3..x..4....3..x..0

CROSSREFS

Sequence in context: A018291 A033167 A081464 * A241589 A289776 A290169

Adjacent sequences:  A216023 A216024 A216025 * A216027 A216028 A216029

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 30 2012

STATUS

approved

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Last modified August 4 19:44 EDT 2020. Contains 336202 sequences. (Running on oeis4.)