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A233483 Number of (n+2)X(1+2) 0..3 arrays with no increasing sequence of length 3 horizontally, diagonally downwards or vertically 1
172952, 8254896, 386906152, 18116531520, 846914338316, 39587056212137, 1850126770689608, 86465768048368472, 4040923982272526872, 188849818269171055054, 8825754751934559124956, 412464977706204443514728 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A233488

LINKS

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

R. H. Hardin, Empirical recurrence of order 60

FORMULA

Empirical recurrence of order 60 (see link above)

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A221742 A239789 A233488 * A251117 A076814 A204792

Adjacent sequences:  A233480 A233481 A233482 * A233484 A233485 A233486

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 11 2013

STATUS

approved

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Last modified January 29 10:34 EST 2020. Contains 331337 sequences. (Running on oeis4.)