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 A278656 T(n,k)=Number of nXk 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes. 7
 0, 0, 0, 0, 0, 0, 0, 24, 24, 0, 6, 1076, 3626, 1076, 6, 77, 19893, 210616, 210616, 19893, 77, 504, 235446, 6920404, 20667190, 6920404, 235446, 504, 2304, 2080575, 159247403, 1386399220, 1386399220, 159247403, 2080575, 2304, 8350, 14836233 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,8 COMMENTS Table starts .....0.........0.............0.................0......................6 .....0.........0............24..............1076..................19893 .....0........24..........3626............210616................6920404 .....0......1076........210616..........20667190.............1386399220 .....6.....19893.......6920404........1386399220...........208991393214 ....77....235446.....159247403.......71471902148.........25885621037640 ...504...2080575....2864009499.....3014441325194.......2738085955639984 ..2304..14836233...42845787540...108332967120296.....253197559557136896 ..8350..89504692..554117433244..3414333388975884...20837244744657222577 .25653.471646066.6355099136464.96390462710001643.1548877617380719532356 LINKS R. H. Hardin, Table of n, a(n) for n = 1..127 EXAMPLE Some solutions for n=3 k=4 ..0..2..0..1. .0..2..1..0. .0..1..1..2. .0..1..0..1. .1..2..0..0 ..2..0..2..1. .0..1..0..0. .0..2..0..0. .2..2..2..2. .0..2..2..0 ..0..0..0..0. .0..0..1..1. .0..1..0..0. .2..2..0..2. .0..0..1..0 CROSSREFS Column 1 is A278365. Sequence in context: A292102 A022980 A023466 * A308419 A010863 A362116 Adjacent sequences: A278653 A278654 A278655 * A278657 A278658 A278659 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Nov 25 2016 STATUS approved

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Last modified September 7 22:13 EDT 2024. Contains 375749 sequences. (Running on oeis4.)