X = (\alpha x,~ \overbrace{x,~ x,\ldots,~x}^{N}).
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Recent Referers:
  1. http://formula.s21g.com/?X%20%3D%20(%5Calpha%20x,~%20%5Co...
  2. https://xr0038.hatenadiary.jp/entry/20120113/1326413256
  3. http://formula.s21g.com/