Formula:8678

Digital Library of Mathematical Functions ID 26.18.E2

${\displaystyle{\displaystyle N+\sum_{t=1}^{n}(-1)^{t}\sum_{1\leq j_{1}<j_{2}<\cdots<j_{t}\leq n}\left\lfloor\frac{N}{p_{j_{1}}p_{j_{2}}\cdots p_{j_{t}}}\right\rfloor.}}$

Symbols List

• ${\displaystyle{\displaystyle\left\lfloor\NVar{x}\right\rfloor}}$:
• ${\displaystyle{\displaystyle j}}$: nonnegative integer
• ${\displaystyle{\displaystyle n}}$: nonnegative integer
• ${\displaystyle{\displaystyle N}}$: set
• ${\displaystyle{\displaystyle p_{n}}}$: primes
 

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