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Search: id:A141845
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| A141845 |
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a(n) = 5*a(n-1) + A047201(n), a(1) = 1. A047201 = numbers not divisible by 5: (1, 2, 3, 4, 6, 7, 8, 9, 11,...). |
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| 1, 7, 38, 194, 976, 4887, 24443, 122224, 611131, 3055667, 15278348, 76391754, 381958786, 1909793947, 9548969753, 47744848784, 238724243941, 1193621219727, 5968106098658, 29840530493314, 149202652466596, 746013262333007
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