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Search: id:A127690
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| A127690 |
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a(1)=3; for n>1, a(n) is least number such a(1)^2+...+a(n)^2 is a square and is equal to (1+a(n))^2. |
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2
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| 3, 4, 12, 84, 3612, 6526884, 21300113901612, 226847426110843688722000884, 25729877366557343481074291996721923093306518970391612
(list; graph; listen)
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