2,5

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

Sequence in context: A017921 A161762 A005913 this_sequence A066951 A046091 A002905

Adjacent sequences: A056687 A056688 A056689 this_sequence A056691 A056692 A056693

easy,nonn

Leroy Quet Aug 10 2000