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 A189497 Number of arrangements of n+1 nonzero numbers x(i) in -8..8 with the sum of floor(x(i)/x(i+1)) equal to zero 1

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

%S 56,554,6474,86416,1218778,17692662,260746932,3870426602,57837221756,

%T 869215927390,13123761537778,198920666858552,3025059739988546,

%U 46133139520964090,705259604715611042,10804567651956071366

%N Number of arrangements of n+1 nonzero numbers x(i) in -8..8 with the sum of floor(x(i)/x(i+1)) equal to zero

%C Column 8 of A189498

%H R. H. Hardin, <a href="/A189497/b189497.txt">Table of n, a(n) for n = 1..78</a>

%e Some solutions for n=5

%e ..7...-8....1....8....1....1....2....5...-5...-7...-1...-1...-7....6....7...-6

%e .-8...-8...-8...-8...-8...-8...-8...-8...-8...-8...-8...-8...-8...-8...-8...-6

%e .-6...-2....8...-7....4...-6...-3...-8...-1....2...-2....5....5...-6...-3....3

%e .-5...-6....8...-5....1...-4....3...-4....6....1....1...-7....3....3...-3....2

%e ..5....1....4...-8....5....4....7....4...-6....8....4...-2....7....1....6...-2

%e ..7....1...-5....8...-7....5....8...-7....1....3...-2...-6....5...-1...-7...-2

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 23 2011

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Last modified February 23 08:04 EST 2024. Contains 370269 sequences. (Running on oeis4.)