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A326740
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Numbers which converge to 7 under repeated application of the powertrain map of A133500.
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10
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7, 71, 75, 107, 117, 127, 137, 147, 157, 167, 177, 187, 197, 207, 307, 407, 507, 523, 543, 607, 707, 711, 723, 747, 751, 807, 907, 1071, 1075, 1171, 1175, 1271, 1275, 1371, 1375, 1471, 1475, 1571, 1575, 1671, 1675, 1771, 1775, 1871, 1875, 1971, 1975, 2071
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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EXAMPLE
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75 -> 7^5 = 16807 -> 1^6*8^0*7 = 7.
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CROSSREFS
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Cf. A133500, A133501, A135384, A135385, A309385, A326733, A326734, A326735, A326736, A326737, A326738, A326739, A326741, A326742.
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KEYWORD
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nonn,base,easy
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AUTHOR
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STATUS
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approved
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