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Numbers that are 5-digit palindromes in at least two bases.
1

%I #12 Feb 13 2021 05:41:26

%S 2293,3074,5001,5854,6148,6953,7409,7703,7801,8200,10252,10658,11314,

%T 12547,13131,13331,13459,14510,14762,15005,15731,16561,16708,17876,

%U 19636,20010,23341,24762,25752,26462,26662,26962,27310,27472,28129

%N Numbers that are 5-digit palindromes in at least two bases.

%e 2293 = 33133_5 = 14341_6.

%e 3074 = 44244_5 = 22122_6.

%o (PARI) isok(m) = {my(nb = 0); for (b=2, m-1, my(d=digits(m, b)); if ((#d == 5) && (Vecrev(d) == d), nb++); if (nb == 2, return (1)););} \\ _Michel Marcus_, Feb 13 2021

%Y Cf. A180453.

%K nonn,base

%O 1,1

%A _John L. Drost_, Sep 05 2010