/sci/ - Science & Math

[Anonymous No.5700260]

Ok /sci/ heres one for you, what is the nth term of the sequence:

2,4,6,12,14,16,22,24,26
You wont be able to do it
pic related

[Anonymous No.5700507]

Easy as fuck.
<span class="math">a_{n}=[2(n\bmod3)]+\left[10\left(\frac{n}{3}-\frac{n\mod3}{3}\right)\right][\math][/spoiler]

[Anonymous No.5700509]

>>5700507
Wouldn't post for some reason. Here's a pic.

[Anonymous No.5700510]

>>5700260
i don't want to make a new thread so i'll ask here

what's the online archive for /sci/?

[Anonymous No.5700516]

a_n = (-n^5+25 n^4-145 n^3+95 n^2+386 n+480)/(30 (n^2-10 n+23))

[Anonymous No.5700520]

>>5700510
http://archive.installgentoo.net/sci/

[Anonymous No.5700549]

http://www.wolframalpha.com/input/?i=2%2C4%2C6%2C12%2C14%2C16%2C22%2C24%2C26

[Anonymous No.5700558]

>>5700260

...,32,34,36

[Anonymous No.5700610]

38

[Anonymous No.5700624]

>>5700509

Nope, it is 2*(n mod 3 + 1) + 10*(floor(n/3)) and not 2*(n mod 3) + 10*(floor(n/3)).

[Anonymous No.5700832]

>>5700624
Same thing

[Anonymous No.5701593]

>>5700832
No because <span class="math">2*(n \mod 3) \in \{0, 1, 2\}[/spoiler] and <span class="math">2*(n \mod 3 + ) \in \{1, 2, 3\}[/spoiler]

[Anonymous No.5701597]

>>5701593
Fucking bitch, isn't there a preview button?

2*(n mod 3) = {0, 1, 2} and 2*(n mod 3 + 1) = {1, 2, 3} so they are not the same thing.

[Talimar No.5701633]

I almost want to dumb it down and say anything greater then 26....