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A077540 a(n) = smallest multiple of the product of next n natural numbers which is a product of consecutive numbers starting with (k+1) where k = n(n+1)/2 = the n-th triangular number. 2
2, 120, 5040, 5765760, 39070080, 5967561600, 66902793897139200, 14792260407724800, 106137499051584000, 195333707771834926694400, 131478134374795266938880000, 912197279957973412118937661440000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
a(3) = 5040 = 7*8*9*10 as 7*8*9 is not divisible by 4*5*6.
CROSSREFS
Sequence in context: A360607 A157069 A362459 * A272180 A187880 A331500
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Nov 09 2002
EXTENSIONS
Corrected and extended by Ray Chandler, Aug 23 2003
STATUS
approved

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Last modified July 22 14:07 EDT 2024. Contains 374499 sequences. (Running on oeis4.)