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A056690 floor[product_{k=2 to n}[ln(k)]]. 0
0, 0, 1, 1, 3, 5, 12, 27, 62, 149, 371, 952, 2513, 6807, 18873, 53472, 154554, 455076, 1363287, 4150560, 12829558, 40227005, 127843589, 411512640, 1340747909, 4418886387, 14724633149, 49582195801, 168638834537, 579103599979 (list; graph; refs; listen; history; internal format)
OFFSET

2,5

EXAMPLE

ln(2)*ln(3)*ln(4)*ln(5)= 1.699... So a(5) = 1, since the integer part of 1.699... is 1.

CROSSREFS

Sequence in context: A017921 A161762 A005913 * A066951 A046091 A002905

Adjacent sequences:  A056687 A056688 A056689 * A056691 A056692 A056693

KEYWORD

easy,nonn

AUTHOR

Leroy Quet Aug 10 2000

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Last modified February 17 07:41 EST 2012. Contains 205998 sequences.