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A047973
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Distance of n-th prime to nearest cube.
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1
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1, 2, 3, 1, 3, 5, 9, 8, 4, 2, 4, 10, 14, 16, 17, 11, 5, 3, 3, 7, 9, 15, 19, 25, 28, 24, 22, 18, 16, 12, 2, 6, 12, 14, 24, 26, 32, 38, 42, 43, 37, 35, 25, 23, 19, 17, 5, 7, 11, 13, 17, 23, 25, 35, 41, 47, 53, 55, 61, 62, 60, 50, 36, 32, 30, 26, 12, 6, 4, 6, 10, 16, 24, 30, 36, 40
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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FORMULA
| For each prime, find the closest cube (preceding or succeeding); subtract, take absolute value.
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EXAMPLE
| For 179, 125 is the preceding cube, 216 is the succeeding. 179-125 = 54, 216-179 = 37, so the distance is 37.
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CROSSREFS
| Cf. A047972.
Sequence in context: A198811 A067337 A180091 * A020501 A086404 A192852
Adjacent sequences: A047970 A047971 A047972 * A047974 A047975 A047976
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KEYWORD
| easy,nonn
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AUTHOR
| Enoch Haga (Enokh(AT)comcast.net)
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