A000040|A014686

[Maximilian Hasler]

Trivially, for any sequence a(i), if
b(i) = a(i) + (-1)^i
then sum(a(i),i=1..2k) = sum(b(i),i=1..2k)

On Sat, Apr 26, 2008 at 2:31 AM, Eric <moongerms at wanadoo.fr> wrote:

>  In sequence of prime numbers add 1 to first prime, 3rd prime, fifth prime,
>  ... then subtract 1 from 2nd prime, fourth prime, sixth prime and so on.
>  [3,2,6,6,12,12,18,18,24,28,32,36,42,42,48,52,60,
>   60,68,70,74,78,84,88,98,100,104,106,110,112,128,
>   130,138,138,150,150,158,162,168,172,180,180,192,
>   192,198,198,212,222,228,228,234,238,242,250,258,
>   262,270,270]
>
>  sumA014686 = sumA000040 = 7141
>  (n<=58)