Does anyone know the formula for finding abnormal number sequences?

[Turkey]

408, 571, 332, 377, 577, 989, 664, ___ I tried everything i can remember but i am not coming with a common sense answer
does anyone have anything else that can help caz the answer did not help me that much

[missingsurfingincali]

cheezer is right. even though you don't understand, the first answer is correct.

[cheeser1234567890]

There is no such thing as "abnormal number sequences" and no "formula" to magically determine the pattern. There are an infinite number of patterns that give those first seven terms, and an infinite number of possible answers for the 8th. The point of figuring out a sequence is not to determine the only possible thing it could be, but to determine the intended relationship between the terms.


For example, there are an infinite number of polynomials that take the values:
f(1) = 408
f(2) = 571
f(3) = 332 ...etc

The true, intended pattern could be immediately apparent, or it could be tricky. It might require some context or further idea of where these numbers are coming from. Mathematicians devote their entire lives' work to determine things like this sometimes, because there is no special formula to just plug it into and get the answer, not unless you know more about where this sequence of numbers is coming from.

[jimschem]

Given:
408. 571, 332, 377, 577, 989, 664


408 * 2^(1/2) = 576.9991 ~ 577
571 * 3^(1/2) = 989.0010 ~ 989
332 * 4^(1/2) = 664.0000 = 664
377 * 5^(1/2) = 842.9976 ~ 843 the next number in the series.

P.S.
I did a web search on:
408. 571, 332, 377, 577, 989, 664