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 A196478 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,0,2,1,4 for x=0,1,2,3,4 0
 1, 6, 40, 826, 40221, 5627727, 1740363958, 1318320614894 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Every 0 is next to 0 3's, every 1 is next to 1 0's, every 2 is next to 2 2's, every 3 is next to 3 1's, every 4 is next to 4 4's Diagonal of A196485 LINKS EXAMPLE Some solutions for n=4 ..2..2..1..0....2..2..2..2....1..0..0..0....1..0..0..0....1..0..0..0 ..2..2..1..1....2..0..1..2....1..2..2..2....1..2..2..0....2..2..0..0 ..0..0..0..1....2..0..1..2....0..2..0..2....0..2..2..0....2..2..0..0 ..0..0..0..1....2..2..2..2....1..2..2..2....1..1..0..0....0..1..1..1 CROSSREFS Sequence in context: A196449 A281262 A186196 * A001367 A096671 A196712 Adjacent sequences:  A196475 A196476 A196477 * A196479 A196480 A196481 KEYWORD nonn AUTHOR R. H. Hardin Oct 03 2011 STATUS approved

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Last modified December 5 00:11 EST 2021. Contains 349527 sequences. (Running on oeis4.)