# Score <s>32</s> <s>34</s> 36 {5, 7, 11, 13, 17, 23, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 101, 113, 131, 137, 151, 211, 229, 241, 281, 313, 379, 401, 433, 457, 491, 521, 571, 601, 25117, 293362609} This is an improvement of Arnauld's answer. I just noticed that \$ \dfrac{1}{19-1}=\dfrac{1}{73-1}+\dfrac{1}{61-1}+\dfrac{1}{41-1} \$ But 41 and 61 were already used in Arnauld's answer so I had to then figure out that \$ \dfrac{1}{61-1} = \dfrac{1}{151-1} + \dfrac{1}{101-1} \$ and \$ \dfrac{1}{41-1} = \dfrac{1}{281-1}+\dfrac{1}{211-1}+\dfrac{1}{151-1}+\dfrac{1}{101-1} \$ But now I am using 151 and 101 twice. So I spent some time and discovered that \$ \dfrac{1}{151-1} = \dfrac{1}{401-1} + \dfrac{1}{241-1} \$ and \$ \dfrac{1}{101-1} = \dfrac{1}{601-1} + \dfrac{1}{571-1} + \dfrac{1}{457-1} + \dfrac{1}{229-1} \$ So now I can just replace the `19` with `71, 151, 101, 151, 211, 229, 241, 281, 401, 457, 471, 601` and the sequence will maintain it's properties. I also discovered that I can replace `19` with the sequence `71, 151, 101, 151, 211, 241, 241, 281, 401, 433, 541, 601`, but that has `241` twice. After that improvement I also noticed that 79 could be replaced with `521, 313, 131`, to increase the size by 2 more. And 73 can be replaced with `113, 379, 433` for another 2.