Numerator of Sum[ (-1)^(k+1) * 1/2^Prime[k], {k,1,n} ].
A122150
Numerator of Sum[ (-1)^(k+1) * 1/2^Prime[k], {k,1,n} ].
Terms
- a(0) =1a(1) =1a(2) =5a(3) =19a(4) =305a(5) =1219a(6) =19505a(7) =78019a(8) =1248305a(9) =79891519a(10) =319566077a(11) =20452228927a(12) =327235662833
External references
- oeis: A122150