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A233841 Number of (n+2)X(4+2) 0..3 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards 1
23453646656, 55891166269184, 131619893152104448, 309991751661980537856, 729964339940515853733888, 1718914265875492989694529536, 4047676685721201279507422679040, 9531416229134972390161555327369216 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A233845

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..124

R. H. Hardin, Empirical recurrence of order 32

FORMULA

Empirical recurrence of order 32 (see link above)

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A306503 A096630 A297005 * A015399 A129475 A172612

Adjacent sequences:  A233838 A233839 A233840 * A233842 A233843 A233844

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 16 2013

STATUS

approved

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Last modified March 31 03:08 EDT 2020. Contains 333136 sequences. (Running on oeis4.)