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 A263973 T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having index change (+-,+-) 0,2 1,1 or 1,0. 8
 4, 20, 0, 108, 72, 16, 465, 1817, 1441, 0, 2265, 10720, 86633, 13856, 64, 10920, 89472, 2604481, 2940624, 189993, 0, 52752, 1791696, 102742049, 226810352, 118376593, 2215960, 256, 253176, 27783305, 4952396901, 24130893568, 31702909989 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ....4........20..........108...........465...........2265.........10920 ....0........72.........1817.........10720..........89472.......1791696 ...16......1441........86633.......2604481......102742049....4952396901 ....0.....13856......2940624.....226810352....24130893568.4071813326144 ...64....189993....118376593...31702909989.11743850653769 ....0...2215960...4465927225.3594130469760 ..256..28027420.173624682220 ....0.340646784 .1024 LINKS R. H. Hardin, Table of n, a(n) for n = 1..49 FORMULA Empirical for column k: k=1: a(n) = 4*a(n-2) k=2: [order 10] k=3: [order 27] k=4: [order 53] Empirical for row n: n=1: [linear recurrence of order 22] EXAMPLE Some solutions for n=3 k=4 ..2..3..6..9..8....2..3..6..1..9....2..5..4..1..8....2..5..4..9..8 ..7..0..1..4.14....7..0..5.12..4....7..0..3.14.13....7..0..1.13..3 ..5.15.17.18.19...16.15..8.17.18....6.16.18.19..9...12..6.17.19.18 .10.12.11.16.13...10.11.19.13.14...11.10.15.12.17...11.10.15.16.14 CROSSREFS Column 1 is A199572(n+1). Row 1 is A263965. Sequence in context: A291947 A023994 A002813 * A104159 A039921 A081852 Adjacent sequences: A263970 A263971 A263972 * A263974 A263975 A263976 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Oct 30 2015 STATUS approved

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Last modified December 9 13:46 EST 2022. Contains 358700 sequences. (Running on oeis4.)