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A053906
Numbers n such that n^2 contains only digits {1,6,7}.
+0
2
1, 4, 26, 131, 276, 881, 3431, 81346, 81619, 129119, 132954, 1292931424
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Maintained by
N. J. A. Sloane
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
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