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 A204086 Least term of A004767 with exactly 2n divisors. 3
 3, 15, 63, 135, 567, 315, 5103, 1155, 1575, 2835, 413343, 4095, 3720087, 25515, 14175, 10395, 301327047, 20475, 2711943423, 36855, 127575, 2066715, 219667417263, 51975, 354375, 18600435, 121275, 331695, 160137547184727, 184275, 1441237924662543, 135135 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS For odd prime p, a(p) = 3^(p-1)*7. LINKS Ray Chandler, Table of n, a(n) for n = 1..2098 (a(2099) exceeds 1000 digits). FORMULA a(n) = min{d|n: A018782(d) * A204046(n/d)}. a(n) = 4*A078714(n)-1. CROSSREFS Cf. A004767, A018782, A204046, A078714. Sequence in context: A122671 A067562 A062211 * A171761 A218313 A218190 Adjacent sequences:  A204083 A204084 A204085 * A204087 A204088 A204089 KEYWORD nonn AUTHOR Ray Chandler, Jan 10 2012 STATUS approved

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