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A049855
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a(n)=Sum{a(k): k=0,1,2,...,n-3,n-1}; a(n-2) is not a summand; 2 initial terms required.
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0
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2, 3, 3, 5, 10, 18, 31, 54, 95, 167, 293, 514, 902, 1583, 2778, 4875, 8555, 15013, 26346, 46234, 81135, 142382, 249863, 438479, 769477, 1350338, 2369678, 4158495, 7297650, 12806483, 22473811, 39438789, 69210250, 121455522
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