OFFSET
1,2
COMMENTS
The same as A070827 from a(2) on. - R. J. Mathar, Nov 16 2012
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..1000
FORMULA
EXAMPLE
a(6) = 8 because Lucas(6) = 18 = 2*3^2 and the sum of the prime divisors with repetition is 2 + 2*3 = 8.
MAPLE
MATHEMATICA
f[n_] := Plus @@ Times @@@ FactorInteger@ LucasL[n]; f[1] = 0; Array[f, 60]
CROSSREFS
KEYWORD
nonn
AUTHOR
Michel Lagneau, Nov 14 2012
STATUS
approved