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A087546
a(1) = 1, a(2) = 2, a(n) = smallest multiple of n beginning with the product of two previous terms.
1
1, 2, 21, 420, 8820, 3704400, 32672808000, 121033149955200000, 3954492870121458201600000000, 478624728546179688151541712568320000000000000
OFFSET
1,2
COMMENTS
Observation: a(n) = a(n-1)*a(n-2) for most of the terms if n is composite and >4.
CROSSREFS
Cf. A087545.
Sequence in context: A245686 A091315 A359716 * A090729 A090310 A024232
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Sep 13 2003
EXTENSIONS
More terms from David Wasserman, Jun 03 2005
STATUS
approved