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A184555 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock summing to less than 4 0
50, 5736, 3436266, 12900566348, 276510402290782, 35245029137091490532, 26246732217663407375879655, 115019923806287297509943176811916, 2957519612846906106776158316962863659667 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A184564
LINKS
EXAMPLE
Some solutions for 3X3
..2..2..2....1..2..0....2..0..2....2..0..2....1..2..2....2..2..0....2..1..2
..2..2..2....2..1..1....1..2..2....1..2..1....2..1..1....2..1..2....2..2..2
..2..0..1....0..2..2....0..2..2....0..2..1....0..1..2....2..1..1....1..2..0
CROSSREFS
Sequence in context: A230477 A320099 A115436 * A301992 A229753 A276102
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 17 2011
STATUS
approved

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Last modified April 16 14:51 EDT 2024. Contains 371749 sequences. (Running on oeis4.)