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A264221 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,0 0,1 1,0 -1,0 or 0,-2. 1

%I #6 Nov 10 2015 11:43:04

%S 64,3610,97520,2407816,68008846,1883268032,51345531360,1411162065495,

%T 38813397148320,1066027094762736,29288688616590792,804848533573703464,

%U 22115072006086377880,607663815006822489585,16697331537936058632432

%N Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,0 0,1 1,0 -1,0 or 0,-2.

%C Row 4 of A264217.

%H R. H. Hardin, <a href="/A264221/b264221.txt">Table of n, a(n) for n = 1..183</a>

%e Some solutions for n=3

%e ..0..3..1..2....0..1..2..7....4..5..6..3....2..0..1..3....2..0..1..7

%e ..8..7..5.11....6..4..5..3....0..1..2..7....4..9..6.11....8..9..6..3

%e ..4..9..6.10....8..9.10.15....8.11..9.10....8..5.10..7....4..5.10.11

%e .12.15.13.14...16.13.18.11...16.15.13.14...16.17.14.15...14.13.18.19

%e .16.17.18.19...12.17.14.19...12.17.18.19...12.13.18.19...12.16.17.15

%Y Cf. A264217.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 08 2015

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Last modified June 20 13:44 EDT 2024. Contains 373527 sequences. (Running on oeis4.)