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A184308 Number of strings of numbers x(i=1..7) in 0..n with sum i^3*x(i)^2 equal to 343*n^2 1

%I

%S 1,2,4,19,21,65,82,278,261,551,650,1608,1339,2645,2506,6462,4736,7722,

%T 8261,17638,12061,20988,20482,40829,28797,46485,41543,88400,61485,

%U 84252,84319,174419,106700,167566,147240,277677,196225,291240,242915,492687

%N Number of strings of numbers x(i=1..7) in 0..n with sum i^3*x(i)^2 equal to 343*n^2

%C Row 7 of A184303

%H R. H. Hardin, <a href="/A184308/b184308.txt">Table of n, a(n) for n = 1..50</a>

%e Some solutions for n=5

%e ..4....2....2....4....4....4....2....2....0....0....0....4....4....5....4....4

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

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 10 2011

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Last modified September 25 13:01 EDT 2020. Contains 337344 sequences. (Running on oeis4.)