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A063798
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phi(s(n^3)) is a square, where s(n) is sigma(n)-n (A001065).
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0
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4, 7, 9, 61, 73, 81, 121, 144, 431, 727, 919, 1596, 2413, 2593, 2809, 3966, 6561, 6827, 9551, 10593, 12791, 17053, 29959, 31238, 33791, 45115, 47051, 76157, 79898, 85607, 140891, 148151, 192887, 203843, 212461, 311293, 381739, 397259
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