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 A136339 a(1) = 1; for all n >= 2, we choose a(n) to be as small as possible so that for all i = 1, ..., n, the sequence of the i-th divisors of a(1), a(2), ..., a(n) is nonincreasing. 0
 1, 2, 4, 6, 12, 24, 48, 60, 120, 240, 360, 720, 1260, 1680, 2520, 5040, 10080, 15120, 25200, 27720, 55440, 110880, 166320, 277200, 554400, 720720, 1441440, 2162160, 3603600, 7207200, 10810800, 21621600, 43243200, 73513440, 122522400 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The original definition of this sequence was: a(n+1) = smallest number such that the d-th divisors of a(n), a(n+1) will never increase. [What is d?] Similar to A094783, except that only members of the sequence can disqualify larger numbers. LINKS EXAMPLE What is a(13), the term after 720? It cannot be 840 because 720's 13th smallest divisor is 18 and 840's 13th smallest divisor is 20 > 18. CROSSREFS Cf. A094783. Sequence in context: A068010 A095848 A208767 * A019505 A135614 A115387 Adjacent sequences:  A136336 A136337 A136338 * A136340 A136341 A136342 KEYWORD nonn AUTHOR J. Lowell, Mar 28 2008 EXTENSIONS Edited by N. J. A. Sloane, Apr 04 2008. I tried to rewrite the definition to make it precise, but I am not sure I have done this correctly. More terms from Hagen von Eitzen, Oct 03 2009 STATUS approved

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Last modified March 30 19:43 EDT 2020. Contains 333127 sequences. (Running on oeis4.)