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 A263744 T(n,k)=Number of length n arrays of permutations of 0..n-1 with each element moved by -k to k places and equal numbers of elements moved upwards and downwards 7

%I

%S 1,1,2,1,2,3,1,2,4,5,1,2,4,10,8,1,2,4,14,19,13,1,2,4,14,36,43,21,1,2,

%T 4,14,46,110,90,34,1,2,4,14,46,214,277,202,55,1,2,4,14,46,282,664,823,

%U 434,89,1,2,4,14,46,282,1118,2516,2292,971,144,1,2,4,14,46,282,1394,5962

%N T(n,k)=Number of length n arrays of permutations of 0..n-1 with each element moved by -k to k places and equal numbers of elements moved upwards and downwards

%C Table starts

%C ..1...1....1.....1......1......1......1......1......1......1......1......1

%C ..2...2....2.....2......2......2......2......2......2......2......2......2

%C ..3...4....4.....4......4......4......4......4......4......4......4......4

%C ..5..10...14....14.....14.....14.....14.....14.....14.....14.....14.....14

%C ..8..19...36....46.....46.....46.....46.....46.....46.....46.....46.....46

%C .13..43..110...214....282....282....282....282....282....282....282....282

%C .21..90..277...664...1118...1394...1394...1394...1394...1394...1394...1394

%C .34.202..823..2516...5962..10090..12658..12658..12658..12658..12658..12658

%C .55.434.2292..7989..21974..44914..68834..83122..83122..83122..83122..83122

%C .89.971.6862.30299.100324.266476.535262.816882.985730.985730.985730.985730

%H R. H. Hardin, <a href="/A263744/b263744.txt">Table of n, a(n) for n = 1..424</a>

%e Some solutions for n=7 k=4

%e ..3....3....0....2....3....4....2....0....3....4....2....3....3....3....1....1

%e ..1....0....4....1....1....5....1....2....0....0....3....2....4....2....2....5

%e ..0....4....5....0....2....3....6....4....2....3....6....0....6....1....0....2

%e ..4....1....1....3....0....0....5....1....4....1....1....1....1....0....5....0

%e ..2....5....3....5....4....2....0....3....6....5....0....4....0....4....3....6

%e ..5....2....6....4....6....1....4....5....1....2....5....5....5....5....4....3

%e ..6....6....2....6....5....6....3....6....5....6....4....6....2....6....6....4

%Y Column 1 is A000045(n+1)

%Y Diagonal is A062868

%K nonn,tabl

%O 1,3

%A _R. H. Hardin_, Oct 25 2015

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Last modified April 20 05:46 EDT 2021. Contains 343121 sequences. (Running on oeis4.)