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Search: id:A069631
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| A069631 |
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a(1) = 4; a(2n) = smallest prime starting (most significant digits) with a(2n-1). a(2n+1) = smallest prime ending (least significant digits)in a(2n). |
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| 4, 41, 241, 2411, 32411, 324113, 6324113, 63241133, 1563241133, 15632411339, 815632411339, 81563241133909, 1981563241133909, 198156324113390947, 24198156324113390947, 2419815632411339094781, 212419815632411339094781
(list; graph; listen)
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