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Search: id:A123179
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| A123179 |
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a(1)=1 a(2)=121 and a(n)=a(n-1) n 2 n 3 n ... n (n-1) n 1, using concatenation. |
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| 1, 121, 1213231, 1213231424341, 121323142434152535451, 1213231424341525354516263646561, 1213231424341525354516263646561727374757671
(list; graph; listen)
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