A137031

Numbers k such that k and k^2 use only the digits 1, 3, 4, 8 and 9.

1, 3, 9, 38, 43, 141, 183, 438, 441, 1183, 1188, 1191, 1391, 3391, 3438, 9188, 9433, 11893, 31488, 43988, 91183, 114891, 141191, 141391, 183933, 333891, 911833, 939938, 943988, 1183188, 1394393, 1394433, 1411893, 3334433, 3343941, 9391183, 9399143, 9483891, 11911893, 14113183, 18198391, 33343833, 33344893, 33439333, 33448933, 43381833

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