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A233923 Number of (n+1)X(3+1) 0..4 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 8 and no adjacent elements equal 1
2792, 32496, 405004, 5389600, 73564176, 1020495508, 14257498880, 200008938060, 2811049435848, 39549756517288, 556711349099564, 7838538953766172, 110381080046653952, 1554480581032234832, 21892229373580339212 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A233928

LINKS

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

R. H. Hardin, Empirical recurrence of order 82

FORMULA

Empirical recurrence of order 82 (see link above)

EXAMPLE

Some solutions for n=2

..2..0..2..0....4..3..4..2....3..0..1..4....2..4..1..4....4..1..4..0

..0..2..4..2....2..0..1..3....2..3..0..3....0..2..0..1....3..0..2..1

..2..0..2..4....1..3..0..4....0..4..2..4....1..4..3..0....0..1..4..0

CROSSREFS

Sequence in context: A014895 A106300 A252601 * A340174 A252900 A236637

Adjacent sequences:  A233920 A233921 A233922 * A233924 A233925 A233926

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 17 2013

STATUS

approved

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Last modified June 25 08:25 EDT 2022. Contains 354835 sequences. (Running on oeis4.)