Differences between revisions 1 and 2
 ⇤ ← Revision 1 as of 2018-10-25 12:55:20 → Size: 498 Editor: TadashiIijima Comment: ← Revision 2 as of 2018-10-25 12:56:07 → ⇥ Size: 486 Editor: TadashiIijima Comment: Deletions are marked like this. Additions are marked like this. Line 13: Line 13: triangle_number = lambda n: int( n * (n + 1) / 2 ) mersenne_number = lambda n: 2 ** n - 1

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• 【高度な話題/別解】メルセンヌ数
• λ式(ラムダ式)をつかえば，以下のように定義することもできます

mersenne_number = lambda  n: 2 ** n - 1