OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..500
MATHEMATICA
a[1] = 3; a[n_] := a[n] = Block[{k = m = a[n - 1] - 1}, k *= 2; While[ ! PrimeQ[k + 1] || ! SquareFreeQ[k], k += m]; k + 1]; Table[(a[n + 1] - 1)/(a[n] - 1), {n, 60}] (* Stefan Steinerberger, Apr 03 2006 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Apr 01 2004
EXTENSIONS
More terms from Stefan Steinerberger, Apr 03 2006
STATUS
approved