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Search: id:A072021
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| A072021 |
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Smallest solution to GCD[x,Rev[x]]=5^n. |
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+0
3
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| 5, 5200, 521000, 5213750, 521875, 5218750, 52130234375, 5734841796875
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a(n)=A069554[5^n]
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EXAMPLE
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n = 8: 5^8 = 390625, a(8) = 5734841796875 = 5.5.5.5.5.5.5.5.5.5.2936239, Rev[a(8)] = 5786971484375 = 5.5.5.5.5.5.5.5.71.208657.
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CROSSREFS
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Cf. A004086, A055483, A069554, A071686, A072005, A072016-A072018.
Sequence in context: A159397 A024074 A086896 this_sequence A079812 A137694 A117711
Adjacent sequences: A072018 A072019 A072020 this_sequence A072022 A072023 A072024
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KEYWORD
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more,nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Jun 06 2002
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