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A250930 Number of (n+1)X(3+1) 0..3 arrays with no 2X2 subblock having a diagonal absolute difference less than its antidiagonal absolute difference 1
16588, 1104364, 73855420, 4951389320, 332020435016, 22261912983384, 1492624513556120, 100078269167905748, 6710111606201809248, 449903872553731244740, 30165440987778271211784, 2022551639273611063403040 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A250935

LINKS

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

R. H. Hardin, Empirical recurrence of order 64

FORMULA

Empirical recurrence of order 64 (see link above)

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A234380 A234381 A236638 * A210272 A183657 A247693

Adjacent sequences:  A250927 A250928 A250929 * A250931 A250932 A250933

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 28 2014

STATUS

approved

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Last modified September 23 10:15 EDT 2021. Contains 347612 sequences. (Running on oeis4.)