OFFSET
1,5
REFERENCES
Aleksandar Ivić, The Riemann Zeta-Function, Wiley, NY, 1985, see p. 439.
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
MATHEMATICA
With[{m = 120}, pow = Select[Range[m], # == 1 || Min[FactorInteger[#][[;; , 2]]] > 1 &]; Accumulate @ BinCounts[Select[Union[Plus @@@ Tuples[pow, {2}]], # <= m &], {1, m, 1}]] (* Amiram Eldar, Feb 12 2023 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Nov 25 2002
EXTENSIONS
More terms from Vladeta Jovovic, Nov 26 2002
STATUS
approved