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A117709 Pentagonal numbers for which the sum of the digits is also a pentagonal number. +0
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0, 1, 5, 651, 1335, 2262, 3432, 3577, 6501, 8400, 8626, 10542, 10795, 15862, 18760, 21540, 25285, 28912, 32340, 32782, 45850, 50142, 50692, 55200, 60501, 72490, 91390, 98945, 104412, 112477, 127750, 135751, 152482, 160230, 170185, 179401 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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