Who can fill the brace: -3,0,26,252,()

[cc123]

who can fill the brace:
-3,0,26,252,()
thanks a lot!

 

[HallsofIvy]

?? In what way? is there any reason that brace could not contain any integer? What are the conditions you are not telling us about?

 

[rohanprabhu]

most probably it's some pointless IQ test where we go on filling in patterns and numbers and all that stuff..

 

[CRGreathouse]

Whew. I get
$$\sigma(4n\cdot2^{2^{2^{3-1}}})-4=2,097,144$$
There's no rounding needed since it's even.

 

[rohanprabhu]

Whew. I get
$$\sigma(4n\cdot2^{2^{2^{3-1}}})-4=2,097,144$$
There's no rounding needed since it's even.

d00d seriously.. what did u just do??

 

[HallsofIvy]

Whew. I get
$$\sigma(4n\cdot2^{2^{2^{3-1}}})-4=2,097,144$$
There's no rounding needed since it's even.

Oh, well, of course!

 

[dodo]

Can you change the first to -6, instead of -3?

 

[cc123]

in any way i think.there are many answers if you can tell the reason.
to Dodo, if u change the first to -6,what is your answer?thank u!

 

[dodo]

With a -6... is it ambiguous. It would be the sequence

$$2^2-10, \ \ \ \ \ \ 2^3-8, \ \ \ \ \ \ 2^5-6, \ \ \ \ \ \ 2^8-4$$​

so the next is $$2^n-2$$, and n depends on how you interpret the sequence of exponents: if it is Fibonacci, then n=11 for a value of 2046, if it is a quadratic, n=12 and you get 4094.