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 A264513 Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change -1,1 0,-1 0,1 or 1,0. 1

%I #4 Nov 15 2015 18:43:36

%S 13,64,6084,241432,9813822,427111736,17171750212,715790653443,

%T 29106633773397,1188933525197424,48274598233923460,

%U 1956764393333783752,79158883562183764249,3196806065835373923009,128962574353107045861077

%N Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change -1,1 0,-1 0,1 or 1,0.

%C Row 7 of A264506.

%H R. H. Hardin, <a href="/A264513/b264513.txt">Table of n, a(n) for n = 1..63</a>

%e Some solutions for n=3

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

%e ..0..6..7..3....5..4..2.10....0..4..7.10....0..6..5.10....0..4..7.10

%e ..9.10.11.14....9..8.11..7....9..5.11.14....9.12.13..7....9..5.13.14

%e ..8.12.13.18...13.12.15.18....8.16.15.18....8.14.15.11....8.12.15.11

%e .17.16.19.15...17.16.14.22...12.13.19.22...17.16.19.18...17.16.19.18

%e .21.24.25.26...21.24.23.19...21.17.23.26...21.20.23.22...21.22.23.26

%e .20.28.22.23...20.28.25.26...20.24.25.30...25.28.29.26...20.28.29.30

%e .29.30.31.27...29.30.31.27...29.28.31.27...24.30.31.27...24.25.31.27

%Y Cf. A264506.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 15 2015

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Last modified December 9 03:04 EST 2023. Contains 367681 sequences. (Running on oeis4.)