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A205828 Number of (n+1)X(n+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two 0
30, 630, 32106, 3875376, 1105752330, 745699860222, 1189207742465910, 4487032707620997018, 40071390912674727590454, 847234959807682079504883018, 42418662789019636446257162237448 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A205836
LINKS
EXAMPLE
Some solutions for n=4
..2..2..1..0..2....2..2..0..1..2....1..0..1..1..2....1..0..2..2..1
..1..0..2..1..0....1..0..1..2..1....2..1..0..2..1....0..2..1..0..2
..2..1..0..2..1....2..1..2..0..2....0..2..1..0..2....1..0..2..1..0
..1..0..2..1..0....0..2..0..2..0....2..1..0..1..0....2..1..0..2..1
..2..1..0..2..1....2..0..1..0..1....1..2..1..2..1....0..2..1..0..2
CROSSREFS
Sequence in context: A001719 A004359 A001777 * A353115 A136661 A264849
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 01 2012
STATUS
approved

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Last modified March 29 09:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)