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A098775
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Palindromic abundant numbers.
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1
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66, 88, 222, 252, 272, 282, 414, 444, 464, 474, 606, 616, 636, 666, 696, 828, 858, 868, 888, 2002, 2112, 2442, 2552, 2772, 2992, 4004, 4224, 4554, 4664, 4884, 5775, 6006, 6336, 6666, 6776, 6996, 8008, 8118, 8228, 8448, 8778, 8888, 20202, 20502, 20802
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(2) = 88 because 88 is the second abundant number which is palindromic also.
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MATHEMATICA
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Select[Range[20802], PalindromeQ[#] && DivisorSigma[1, #] > 2 * # &] (* Amiram Eldar, Aug 23 2020 *)
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CROSSREFS
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KEYWORD
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easy,nonn,base
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AUTHOR
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STATUS
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approved
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