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A153476
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Sum of first n even superperfect numbers A061652, divided by 2.
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2
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1, 3, 11, 43, 2091, 34859, 165931, 537036843, 576460752840460331, 154742505487133287202850859, 40564973949808827981181705422891, 42535336430091257741749807110676449323
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