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Search: id:A121544
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| A121544 |
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Sum of all proper base 4 numbers with n digits (those not beginning with 0). |
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+0 1
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| 6, 114, 1896, 30624, 491136, 7862784, 125822976, 2013241344, 32212156416, 515395682304
(list; graph; listen)
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