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A137127
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Numbers n such that n and the square of n use only the digits 3, 4, 6, 7 and 8.
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1
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6, 8, 88, 688, 874, 876, 8874, 8876, 68474, 86478, 88678, 683874, 683876, 6688374, 6883876, 87663474, 666834678, 668383478, 683847844, 684388374, 887348678, 6887436878, 8646643474, 8767376374, 66684883478, 66846374378, 68466373844, 87377836878, 87446363374, 668478484878, 683643676438, 684388368376, 684663763374
(list; graph; refs; listen; history; internal format)
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