2,1

For n>=4, a(n) = 2^A000045(n-3)*3^A000045(n-2) - Benoit Cloitre (benoit7848c(AT)orange.fr), Sep 26 2003

A000304 := proc(n) option remember; if n <=3 then n else A000304(n-1)*A000304(n-2); fi; end;

Adjacent sequences: A000301 A000302 A000303 this_sequence A000305 A000306 A000307

Sequence in context: A038056 A072241 A093468 this_sequence A000614 A018290 A121959

nonn

njas