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 A330043 Product of largest prime power factors of numbers <= n. 0
 1, 1, 2, 6, 24, 120, 360, 2520, 20160, 181440, 907200, 9979200, 39916800, 518918400, 3632428800, 18162144000, 290594304000, 4940103168000, 44460928512000, 844757641728000, 4223788208640000, 29566517460480000, 325231692065280000, 7480328917501440000, 59842631340011520000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Partial products of A034699. LINKS Table of n, a(n) for n=0..24. FORMULA A001221(a(n)) = A000720(n). MATHEMATICA a[n_] := Product[Max[#[[1]]^#[[2]] & /@ FactorInteger@k], {k, 1, n}]; Table[a[n], {n, 0, 24}] CROSSREFS Cf. A000720, A000961, A001221, A034699, A048803, A104350, A210208, A246655, A284521. Sequence in context: A178010 A366368 A355988 * A062348 A189856 A189567 Adjacent sequences: A330040 A330041 A330042 * A330044 A330045 A330046 KEYWORD nonn AUTHOR Ilya Gutkovskiy, Nov 28 2019 STATUS approved

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Last modified September 14 10:49 EDT 2024. Contains 375921 sequences. (Running on oeis4.)