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A061583
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a(1) = 1, a(n) is the number obtained by replacing each digit of a(n-1) with five times its value.
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5
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OFFSET
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1,2
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COMMENTS
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LINKS
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MAPLE
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a:= proc(n) option remember; `if`(n=1, 1, (s-> parse(cat(
seq(parse(s[i])*5, i=1..length(s)))))(""||(a(n-1))))
end:
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MATHEMATICA
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NestList[FromDigits[Flatten[IntegerDigits/@(5*IntegerDigits[#])]]&, 1, 10] (* Harvey P. Dale, Dec 31 2013 *)
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PROG
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(Python)
an = "1"
a061583 = []
while n > 1:
a061583.append(int(an))
newan = ""
for i in an:
newan += str(5*int(i))
an = newan
n -= 1
a061583.append(int(an))
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CROSSREFS
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KEYWORD
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nonn,base,easy
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AUTHOR
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EXTENSIONS
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More terms from Larry Reeves (larryr(AT)acm.org) and Asher Auel, May 15 2001
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STATUS
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approved
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