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Search: id:A051109
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| A051109 |
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Hyperinflation sequence for banknotes. |
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+0
4
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| 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000, 50000, 100000, 200000, 500000, 1000000, 2000000, 5000000, 10000000, 20000000, 50000000, 100000000, 200000000, 500000000, 1000000000, 2000000000, 5000000000
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Denominations of Polish banknotes circa 1995.
English coins in 2006 have denominations of 1, 2, 5, 10, 20, 50, 100, 200 pence.
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FORMULA
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a(3n)=10^n, a(3n+1)=2*10^n, a(3n+2)=5*10^n
a(n) = [(n%3)^2 + 1]*10^(n/3). E.g. a(0) = [(0%3)^2 + 1]*10^(0/3) = [0^2 + 1]*10^0 = 1, a(4) = [(4%3)^2 + 1]*10^(4/3) = [1^2 + 1]*10^1 = 20, a(8) = [(8%3)^2 + 1]*10^(8/3) = [2^2 + 1]*10^2 = 500. - Justin L. Brown (jlbrown(AT)neo.tamu.edu), Jun 17 2004
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CROSSREFS
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Cf. A117727.
Sequence in context: A002460 A006836 A129847 this_sequence A124146 A032468 A056599
Adjacent sequences: A051106 A051107 A051108 this_sequence A051110 A051111 A051112
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KEYWORD
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easy,nonn
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AUTHOR
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Robert Lozyniak (11(AT)onna.com)
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