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 A023382 a(n+1) = a(n) converted to base 9 from base 5 (written in base 10). 1
 5, 9, 13, 21, 37, 101, 325, 1701, 15553, 265521, 15145741, 4407319297, 8476862457125, 317357347477745133, 729744078980232421278033, 312985160558462528575346809331697, 165846387971749525630798815099063350900119181 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS John Cerkan, Table of n, a(n) for n = 1..27 MAPLE 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: seq(A[i], i=1..20); # Robert Israel, Nov 07 2016 MATHEMATICA NestList[FromDigits[IntegerDigits[#, 5], 9]&, 5, 20] (* Harvey P. Dale, Oct 05 2015 *) CROSSREFS Sequence in context: A334214 A053411 A332571 * A314793 A314794 A314795 Adjacent sequences: A023379 A023380 A023381 * A023383 A023384 A023385 KEYWORD nonn AUTHOR David W. Wilson EXTENSIONS One additional term (a(17)) from Harvey P. Dale, Oct 05 2015 STATUS approved

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Last modified June 7 21:12 EDT 2023. Contains 363157 sequences. (Running on oeis4.)