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A115743
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Squares that are the product of 2 palindromes greater than 1.
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3
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4, 9, 16, 25, 36, 49, 64, 81, 121, 484, 1089, 1764, 1936, 2401, 2704, 3025, 4356, 5929, 6084, 7744, 9801, 10201, 12321, 14641, 17161, 19881, 22801, 25921, 27225, 29241, 32761, 36481, 40804, 44944, 49284, 53824, 58564, 63504, 68644, 69696
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OFFSET
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1,1
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COMMENTS
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Are most terms of the form p^2 where p is a palindrome? - David A. Corneth, May 25 2021
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LINKS
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EXAMPLE
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6084 = 78^2 and 6084 = 9*676.
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MATHEMATICA
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With[{nn=50000}, Select[Union[Select[Times@@@Tuples[Select[Range[2, nn], PalindromeQ], 2], IntegerQ[ Sqrt[ #]]&]], #<=2 nn&]] (* Harvey P. Dale, Aug 21 2022 *)
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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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STATUS
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approved
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