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approved
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approved
editing
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Numbers n k such that the sum of the first n k odd composites is palindromic.
P. Patrick De Geest, <a href="http://www.worldofnumbers.com/firstpal.htm#sfn4">Palindromic Sums</a>
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proposed
approved
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1, 12, 25, 61, 108, 211, 1344, 2339, 10539, 78409, 283181, 1748747, 1795423, 2386702, 2819089, 179101605, 1923088106, 2822581688, 7794689270, 17381011919, 25635268093, 28780043265, 97973526253
a(21)-a(23) from Chai Wah Wu, Dec 06 2019
approved
editing
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approved
Patrick De Geest, Dec 15 2000.
approved
editing