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 A202134 T(n,k) = Number of zero-sum n X k -3..3 arrays with every element equal to at least one horizontal or vertical neighbor. 5
 0, 1, 1, 1, 13, 1, 7, 123, 123, 7, 5, 1205, 1857, 1205, 5, 43, 12287, 135315, 135315, 12287, 43, 43, 135179, 3767643, 22197147, 3767643, 135179, 43, 275, 1493247, 227460779, 3628653641, 3628653641, 227460779, 1493247, 275, 371, 16814401 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Table starts ...0.......1.........1..........7..........5........43.........43......275.371 ...1......13.......123.......1205......12287....135179....1493247.16814401 ...1.....123......1857.....135315....3767643.227460779.8550543057 ...7....1205....135315...22197147.3628653641 ...5...12287...3767643.3628653641 ..43..135179.227460779 ..43.1493247 .275 LINKS R. H. Hardin, Table of n, a(n) for n = 1..39 EXAMPLE Some solutions for n=3, k=3 .-1..2..2....0..0..0....2..2.-2...-3.-3.-3....2..0..0....2.-2..2....1.-3.-3 .-1..2..2....0.-3..3....0..1.-2....3..3..3....2..0..0....2.-2..2....1..1.-3 .-2.-2.-2....0.-3..3....0..1.-2....0..0..0....2.-3.-3...-3.-3..2....2..2..2 CROSSREFS Sequence in context: A116993 A010234 A111738 * A185409 A010235 A196381 Adjacent sequences: A202131 A202132 A202133 * A202135 A202136 A202137 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Dec 11 2011 STATUS approved

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Last modified August 8 06:29 EDT 2024. Contains 375020 sequences. (Running on oeis4.)