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A065809 a(n) = smallest number m>n such that m is palindromic in base n and is not palindromic in bases b with 2 <= b < n. 1
3, 4, 25, 6, 14, 32, 54, 30, 11, 84, 39, 140, 75, 176, 102, 198, 19, 220, 147, 110, 69, 384, 175, 416, 486, 420, 58, 570, 279, 544, 429, 306, 245, 684, 296, 380, 663, 880, 615, 1134, 258, 1012, 1035, 1104, 47, 1392, 539, 1500, 1071, 1508, 53, 2106 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Robert Israel, Table of n, a(n) for n = 2..442

MAPLE

N:= 100:

f:= proc(m) local k, L;

   for k from 2 to m do

     L:= convert(m, base, k);

     if L = ListTools:-Reverse(L) then return k fi

   od;

   FAIL

end proc:

V:= Array(2..N):

count:= 0:

for m from 3 while count < N-1 do

  v:= f(m);

  if v = FAIL or v > N then next fi;

  if V[v] = 0 then count:= count+1; V[v]:= m;

  fi

od:

convert(V, list); # Robert Israel, Apr 08 2019

CROSSREFS

Cf. A065531.

Sequence in context: A189738 A256830 A065900 * A093600 A128778 A338425

Adjacent sequences:  A065806 A065807 A065808 * A065810 A065811 A065812

KEYWORD

easy,nonn

AUTHOR

Naohiro Nomoto, Dec 06 2001

EXTENSIONS

Definition edited by N. J. A. Sloane, Apr 08 2019

STATUS

approved

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Last modified August 1 12:46 EDT 2021. Contains 346385 sequences. (Running on oeis4.)