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A189541 Number of arrangements of n+1 nonzero numbers x(i) in -5..5 with the sum of trunc(x(i)/x(i+1)) equal to zero 1

%I #5 Mar 31 2012 12:36:15

%S 40,152,1340,11276,97836,911144,8485264,80270588,762015216,7245223968,

%T 69300586592,665123270568,6402235178628,61805759252168,

%U 598018355467584,5798061848435388,56317251524412720,547885648488675312

%N Number of arrangements of n+1 nonzero numbers x(i) in -5..5 with the sum of trunc(x(i)/x(i+1)) equal to zero

%C Column 5 of A189545

%H R. H. Hardin, <a href="/A189541/b189541.txt">Table of n, a(n) for n = 1..156</a>

%e Some solutions for n=6

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

%e .-5...-5...-5...-4...-5...-4...-4...-4...-4...-4...-4...-4...-5...-4...-5...-5

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 23 2011

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)