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A020934
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Greatest k such that (k-th prime) < (4 times n-th prime).
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7
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4, 5, 8, 9, 14, 15, 19, 21, 24, 30, 30, 34, 38, 39, 42, 47, 51, 53, 56, 61, 61, 65, 67, 71, 76, 79, 80, 82, 84, 87, 96, 99, 101, 101, 108, 110, 114, 118, 121, 125, 127, 128, 135, 136, 138, 138, 146, 154, 155, 156, 158, 162, 162, 168, 172, 177, 180, 180, 185, 188
(list; graph; refs; listen; history; internal format)
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