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A026244 4^n*(4^n+1)/2. +0
4
1, 10, 136, 2080, 32896, 524800, 8390656, 134225920, 2147516416, 34359869440, 549756338176, 8796095119360, 140737496743936, 2251799847239680, 36028797153181696, 576460752840294400, 9223372039002259456, 147573952598266347520, 2361183241469182345216 (list; graph; listen)
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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