Problem 700
Eulercoin
Leonhard Euler was born on
Consider the sequence
An element of this sequence is defined to be an Eulercoin if it is strictly smaller than all previously found Eulercoins.
For example, the first term is
The sum of the first
Find the sum of all Eulercoins.
欧拉币
莱昂哈德·欧拉出生于
考虑序列
该序列中的某个元素被定义为欧拉币,当且仅当它严格小于之前已经定义的所有欧拉币。
例如,序列的第一项是
因此,前
求所有欧拉币之和。
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