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A195903
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Numbers m such that m-th centered triangular number is a palindrome.
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2
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1, 2, 101, 174, 211, 249, 257, 1822, 2070, 20795, 9531980, 17880587, 215198695, 1702002467, 167526192487, 196759830168, 2036493584526, 17476134422427, 82406037714600, 170438376135142, 181002188703854, 189344689666188, 213031868452710, 10020895012660701, 17108271682888342
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OFFSET
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1,2
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COMMENTS
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LINKS
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Terry Trotter, Polygonal numbers [numbers >=920 on this page were incorrect when accessed Sep 25 2011] [Warning: As of March 2018 this site appears to have been hacked. Proceed with great caution. The original content should be retrieved from the Wayback machine and added here. - N. J. A. Sloane, Mar 29 2018]
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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