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A136982
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Numbers k such that k and k^2 use only the digits 1, 2, 3, 7 and 8.
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1
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1, 11, 111, 1311, 13311, 17811, 133311, 288311, 883811, 1333311, 1823111, 3373111, 13333311, 87828311, 88781311, 133333311, 178387811, 878133311, 888137811, 1333333311, 1372178311, 3337231311, 8881287811, 13183783111, 13333333311, 17712178811, 27781781311, 117183137811, 133333333311, 137373112811, 181138378811
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