OFFSET
1,17
FORMULA
EXAMPLE
a(51) = 3. The 3 partitions of 51 are (23,28), (24,27), and (25,26).
MATHEMATICA
Table[Sum[KroneckerDelta[PrimePi[k], PrimePi[n - k]], {k, Floor[(n - 1)/2]}], {n, 100}]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wesley Ivan Hurt, May 04 2023
STATUS
approved