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A264532 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change -2,-2 -1,0 0,1 or 1,0. 1

%I #4 Nov 17 2015 09:25:49

%S 1,16,261,3256,82961,1293264,22000750,400032412,6346673554,

%T 110239970880,1782515148562,30186931360436,492032288243663,

%U 8215026875398028,134742999702401601,2230378105458061646,36699077259627534623

%N Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change -2,-2 -1,0 0,1 or 1,0.

%C Column 6 of A264534.

%H R. H. Hardin, <a href="/A264532/b264532.txt">Table of n, a(n) for n = 1..77</a>

%e Some solutions for n=4

%e ..7..0..1.19.20.12.13....7..0..1.10.20..4.13....7.17..1..2..3..4..5

%e .14.15..2..3..4..5..6...14.15..2..3.18..5..6....0.15..8.26.27.11..6

%e .30..8..9.10.11.26.27...30..8..9.33.11.12.19...30.14..9.10.34.12.13

%e .28.29.16.17.18.25.34...28.29.16.17.32.25.34...28.29.16.31.18.19.20

%e .21.22.23.24.31.32.33...21.22.23.24.31.26.27...21.22.23.24.25.32.33

%Y Cf. A264534.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 17 2015

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Last modified April 25 01:06 EDT 2024. Contains 371964 sequences. (Running on oeis4.)