1,2

Observation: a(n) = a(n-1)*a(n-2) for most of the terms if n is composite and >4.

Table of n, a(n) for n=1..10.

Cf. A087545.

Sequence in context: A263625 A245686 A091315 * A090729 A090310 A024232

Adjacent sequences: A087543 A087544 A087545 * A087547 A087548 A087549

base,nonn

Amarnath Murthy, Sep 13 2003

More terms from David Wasserman, Jun 03 2005

approved