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A203028 Number of nX4 0..3 arrays with row sums equal and column sums unequal to adjacent columns 1
108, 4904, 191208, 7788648, 315135868, 13106373164, 539443637988, 22639602879704, 946776650128788, 40106804207313724, 1690657696699919704, 71964960511855011228, 3057756409953021991140, 130835056946777504268476 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A203031

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..20

EXAMPLE

Some.solutions.for.n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A269182 A244877 A223153 * A138784 A035812 A054624

Adjacent sequences:  A203025 A203026 A203027 * A203029 A203030 A203031

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 27 2011

STATUS

approved

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Last modified September 18 01:39 EDT 2021. Contains 347504 sequences. (Running on oeis4.)