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A085456
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Sum(Sum a(j)a(i-j),(j=0,..,i)),(i=0,..,n)=(-7)^n.
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0
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1, -4, 20, -116, 708, -4452, 28532, -185300, 1215268, -8030404, 53381844, -356577588, 2391430020, -16092704292, 108605848116, -734783381652, 4982063186916, -33844621986180, 230306722637204, -1569571734301172, 10711405584991300, -73188920628617956, 500643475619050740
(list; graph; refs; listen; history; internal format)
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