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 A188281 Number of nondecreasing strings of numbers x(i=1..7) in -n..n with sum x(i)^3 equal to 0 1

%I #5 Mar 31 2012 12:36:11

%S 4,10,22,41,68,114,202,273,402,548,720,979,1248,1660,2072,2525,3068,

%T 3802,4498,5377,6632,7846,8998,10497,11970,13908,15870,18569,20582,

%U 23382,25854,28777,32118,35686,40460,45077,49272,53972,60012,65619,71256,80372

%N Number of nondecreasing strings of numbers x(i=1..7) in -n..n with sum x(i)^3 equal to 0

%C Row 7 of A188277

%H R. H. Hardin, <a href="/A188281/b188281.txt">Table of n, a(n) for n = 1..181</a>

%e Some solutions for n=8

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

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

%e ..1...-3....0...-1...-1...-2...-3...-3...-2...-1....0...-3....0...-2...-6....0

%e ..2...-2....0....4....4....0....0....0...-2....0....0....0....0....0....2....2

%e ..2....4....0....4....4....2....3....3...-2....1....0....3....0....2....4....3

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 26 2011

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Last modified May 27 21:52 EDT 2024. Contains 372882 sequences. (Running on oeis4.)