Bernoulli sonlari Bn ratsional sonlar toʻplami boʻlib, matematikada koʻp uchraydi, masalan, trigonometrik, giperbolik va boshqa funksiyalarda hisoblash uchun koeffitsiyentlar sifatida, yoki Yevler-Maklaren formulasida, sonlar nazariyasida Riemann zeta funksiyasi bilan bogʻliq vaziyatlarda. Ushbu sonlarga bunday nom berishni Avraam de Muavr taklif qilgan.

Birinchi Bernoulli sonlari: 1/6{\displaystyle 1/6}, 1/30{\displaystyle 1/30}, 1/42{\displaystyle 1/42}, 1/30{\displaystyle 1/30}, 5/56{\displaystyle 5/56}, 691/2730{\displaystyle 691/2730}, 7/6{\displaystyle 7/6}, 3671/510{\displaystyle 3671/510}, 43867/798{\displaystyle 43867/798}, 174611/330{\displaystyle 174611/330}, 854513/138{\displaystyle 854513/138} va b.

∑n=0N−1nk=1k+1∑s=0k(k+1s)BsNk+1−s,{\displaystyle \sum_{n=0}^{N-1} n^k = \frac1{k + 1} \sum_{s=0}^k \binom{k + 1}{s} B_s N^{k + 1 - s},} Qayerda (k+1s)=(k+1)!s!⋅(k+1−s)!{\displaystyle \tbinom{k + 1}{s} = \tfrac{(k + 1)!}{s! \cdot (k + 1 - s)!}}

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