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A018233
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Consider pairs (k,m) such that k^2 begins with a 1 and when the 1 is changed to a 2 we again get a square, m^2; sequence gives values of k for primitive solutions.
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2
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105, 3375, 14025, 326625, 10846875, 43708125, 1015903125, 34856484375, 136203890625, 111998513671875, 424408358203125, 359825755224609375, 1322343959384765625, 1155912765076904296875, 4119741961077392578125, 3712890686865325927734375
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OFFSET
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1,1
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COMMENTS
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Primitive here means that if (k,m) is a solution, solutions like (10^t*k,10^t*m) are ignored. - Sean A. Irvine, Feb 05 2019
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REFERENCES
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Posting by Noam D. Elkies to netnews circa Oct 15 1992.
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LINKS
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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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Missing terms inserted and more terms from Sean A. Irvine, Feb 05 2019
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STATUS
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approved
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