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 A051549 a(n) = LCM { sigma(1), ..., sigma(n) }. 1
 1, 3, 12, 84, 84, 84, 168, 840, 10920, 32760, 32760, 32760, 32760, 32760, 32760, 1015560, 1015560, 1015560, 1015560, 1015560, 4062240, 4062240, 4062240, 4062240, 4062240, 4062240, 4062240, 4062240, 4062240, 4062240, 4062240 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..30. MATHEMATICA nn=40; With[{sig=DivisorSigma[1, Range[nn]]}, Table[LCM@@Take[sig, n], {n, nn}]] (* Harvey P. Dale, Nov 15 2013 *) CROSSREFS Cf. A000203. Sequence in context: A229421 A212718 A357846 * A245775 A277782 A066780 Adjacent sequences: A051546 A051547 A051548 * A051550 A051551 A051552 KEYWORD nonn AUTHOR N. J. A. Sloane STATUS approved

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Last modified December 5 00:23 EST 2023. Contains 367565 sequences. (Running on oeis4.)