OFFSET
1,9
LINKS
Eric Weisstein's World of Mathematics, Goldbach Partition
Wikipedia, Goldbach's conjecture
MAPLE
MATHEMATICA
Table[Sum[Boole[PrimeQ@ i] Boole[PrimeQ[2 n - i]] Sign@ Floor[n/(2 (n - i))], {i, 3, n - 1}], {n, 90}] (* Michael De Vlieger, Dec 21 2016 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wesley Ivan Hurt, Dec 18 2016
STATUS
approved