A177892 The number of distinct prime factors in Lucas-Lehmer number A003010(n).
1, 2, 2, 3, 2, 3, 6, 3, 5, 5
Offset: 0
Links
- Dario Alejandro Alpern, Factorization using the Elliptic Curve Method (along with sigma_0, sigma_1 and phi functions)
Programs
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Mathematica
Table[PrimeNu[Ceiling[(2 + Sqrt[3])^(2^n)]], {n,0,5}] (* G. C. Greubel, May 16 2017 *) -
PARI
a=4; until(a=a^2-2, print1(omega(a)", ")) \\ M. F. Hasler, Dec 14 2010
Extensions
a(9) from Wang Runsen, Oct 26 2020
Comments