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A188274 Number of nondecreasing strings of numbers x(i=1..n) in -6..6 with sum x(i)^3 equal to 0. 1

%I #7 Jan 27 2022 22:53:48

%S 1,7,7,30,30,106,114,346,422,1070,1482,3166,4778,8954,14026,23987,

%T 37639,60443,93145,143096,214982,319514,467648,676718,966748,1367076,

%U 1911186,2647754,3631406,4939378,6659970,8910883,11832157,15599235,20427293

%N Number of nondecreasing strings of numbers x(i=1..n) in -6..6 with sum x(i)^3 equal to 0.

%C Column 6 of A188277.

%H R. H. Hardin, <a href="/A188274/b188274.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=8, k=6

%e .-3...-4...-6...-2...-6...-5...-5...-5...-4...-4...-3...-5...-6...-5...-6...-6

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

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

%e ..0....1....0....0....0...-1...-3....0...-3....0....0....0...-1...-3....0....0

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

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

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

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

%Y Cf. A188277.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 26 2011

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)