%I #13 Sep 26 2016 03:31:24
%S 0,1,3,7,31,255,32767
%N Numbers that are never pandigital for any base b > 1.
%C Here, a number is considered pandigital in base b if any digit from 0 to b-1 appears at least once in its base b representation (ignoring leading zeros).
%C This is a subsequence of A000225, conjectured to be finite (no other term below 2^1000000).
%C No other terms below 2^10^10. - _Charles R Greathouse IV_, Sep 26 2016
%H Rémy Sigrist, <a href="/A277028/a277028.gp.txt">PARI/GP program for A277028</a>
%e 32767 is not pandigital in any base b between 2 and 6:
%e b 32767 in base b Missing digits
%e - --------------- --------------
%e 2 111111111111111 0
%e 3 1122221121 0
%e 4 13333333 0, 2
%e 5 2022032 1, 4
%e 6 411411 0, 2, 3, 5
%e Moreover, 32767 is too small to be pandigital in any base b > 6, hence 32767 is in the sequence.
%o (PARI) See Sigrist link.
%Y Cf. A055085, A171102.
%K nonn,base
%O 1,3
%A _Rémy Sigrist_, Sep 25 2016