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A023382
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a(n+1) = a(n) converted to base 9 from base 5 (written in base 10).
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1
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5, 9, 13, 21, 37, 101, 325, 1701, 15553, 265521, 15145741, 4407319297, 8476862457125, 317357347477745133, 729744078980232421278033, 312985160558462528575346809331697, 165846387971749525630798815099063350900119181
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OFFSET
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1,1
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LINKS
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MAPLE
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f:= proc(n) local L;
L:= convert(n, base, 5);
add(L[i]*9^(i-1), i=1..nops(L))
end proc:
A[1]:= 5:
for i from 2 to 20 do
A[i]:= f(A[i-1])
od:
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MATHEMATICA
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NestList[FromDigits[IntegerDigits[#, 5], 9]&, 5, 20] (* Harvey P. Dale, Oct 05 2015 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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