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%I #9 Mar 02 2015 16:08:48
%S 1,2,3,6,6,36,108,3888,23328,90699264,9795520512,888446500935303168,
%T 20725679973818752303104,18413657852244156256526524022900467433472,
%U 180371363192607497842938699938382286478962971377664
%N Multiplicative 3-wave sequence starting with 1,2,3.
%F a(n)=a(n-1)*a(n-2) if n is odd, a(n)=a(n-1)*a(n-4) if n is even.
%p For given n, this generates terms with index 0 through 2n: a[0] := 1; a[1] := 2; a[2] := 3; for i from 1 to n-1 do a[2*i+1] := a[2*i]*a[2*i-1]; a[2*i+2] := a[2*i+1]*a[2*i-2]; od; # Christopher N. Swanson (cswanson(AT)ashland.edu), Jul 22 2003
%Y Cf. A038196.
%K nonn,easy
%O 0,2
%A _Floor van Lamoen_, Mar 21 2002
%E More terms from Christopher N. Swanson (cswanson(AT)ashland.edu), Jul 22 2003
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