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 A265466 T(n,k)=Number of nXk 0..n+k-2 arrays with upper left zero and lower right n+k-2 and each element differing from its horizontal and antidiagonal neighbors by one or two. 14
 1, 1, 1, 1, 3, 3, 2, 26, 18, 16, 9, 139, 550, 232, 125, 29, 765, 8812, 9808, 2764, 1296, 79, 6221, 121819, 398508, 290140, 34471, 16807, 220, 46898, 1630672, 17481072, 22533687, 8526762, 448920, 262144, 673, 292690, 25855219, 593770274, 2002867877 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Table starts ......1.......1..........1.............2................9..................29 ......1.......3.........26...........139..............765................6221 ......3......18........550..........8812...........121819.............1630672 .....16.....232.......9808........398508.........17481072...........593770274 ....125....2764.....290140......22533687.......2002867877........176223025171 ...1296...34471....8526762....1509143496.....274085245804......49094408347776 ..16807..448920..226627855...90139418667...40379152013237...15984824483462062 .262144.5975090.6429210362.5406371366046.5373739385807564.5061676810415781351 LINKS R. H. Hardin, Table of n, a(n) for n = 1..127 EXAMPLE Some solutions for n=3 k=4 ..0..2..3..2....0..2..3..1....0..2..3..2....0..2..3..1....0..2..3..5 ..0..2..3..1....3..2..3..2....3..2..1..2....0..1..3..5....4..2..3..5 ..0..2..3..5....3..1..3..5....4..2..4..5....2..1..3..5....3..4..3..5 CROSSREFS Column 1 is A000272. Row 1 is A265440. Sequence in context: A019252 A196544 A289893 * A002073 A247093 A329273 Adjacent sequences: A265463 A265464 A265465 * A265467 A265468 A265469 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Dec 09 2015 STATUS approved

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Last modified August 14 09:30 EDT 2024. Contains 375159 sequences. (Running on oeis4.)