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a(1) = 1, a(n+1) is the largest squarefree number <= n*a(n).
0

%I #7 Dec 05 2013 19:55:48

%S 2,2,3,7,26,130,779,5453,43622,392597,3925970,43185670,518228039,

%T 6736964507,94317503097,1414762546454,22636200743263,384815412635471,

%U 6926677427438474,131606871121331006,2632137422426620118

%N a(1) = 1, a(n+1) is the largest squarefree number <= n*a(n).

%p with(numtheory):a[1] := 2:for n from 2 to 34 do q := a[n-1]*(n-1):while(not issqrfree(q)) do q := q-1:od:a[n] := q:od:seq(a[l],l=1..34);

%K nonn

%O 1,1

%A _Amarnath Murthy_, Oct 26 2002

%E More terms from _Sascha Kurz_, Jan 26 2003