[一个（还两个哪！）]

找出n的公式

9,12,18,27,...N
1, 1, 2, 3, 5, 8, ... N
3, 1, 4, 5, 9, 14, ... N
a, f, k, p, ... N
on, tw, th, fo ,fi, ... N
8, 5, 4, 9, 1, 7, 6, ... N
3, 7, 13, 21, 31, ... N
0, 6, 24, 60, 120, ... N

[webdriver]

[quote:964e8808b1="一个（还两个哪！）"]找出n的公式

9,12,18,27,...N --- N = (N-1)+3*(index of N-1)
1, 1, 2, 3, 5, 8, ... N --- N = (N-1)+(N-2) , basic fibonacci series
3, 1, 4, 5, 9, 14, ... N --- N = (N-1)+(N-2)
a, f, k, p, ... N --- N = char(index(char(N-1)) + 5)
on, tw, th, fo ,fi, ... N --- N = first 2 characters of each index in english number
8, 5, 4, 9, 1, 7, 6, ... N --- N = ?
3, 7, 13, 21, 31, ... N --- N = 1 + (n)x(n+1), n is the index of N
0, 6, 24, 60, 120, ... N --- N = (n)x(n+1)x(n+2) , n is the index of N
[/quote:964e8808b1]

[一个（还两个哪！）]

厉害。。。