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A131093
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a(1)=1, a(n) = a(n-1) + sum of odd numbers which are among the first (n-1) terms of the sequence.
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2
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1, 2, 3, 7, 18, 29, 69, 178, 287, 683, 1762, 2841, 6761, 17442, 28123, 66927, 172658, 278389, 662509, 1709138, 2755767, 6558163, 16918722, 27279281, 64919121, 167478082, 270037043, 642633047, 1657862098, 2673091149
(list; graph; refs; listen; history; internal format)
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