

A277028


Numbers that are never pandigital for any base b > 1.


1




OFFSET

1,3


COMMENTS

Here, a number is considered pandigital in base b if any digit from 0 to b1 appears at least once in its base b representation (ignoring leading zeros).
This is a subsequence of A000225, conjectured to be finite (no other term below 2^1000000).
No other terms below 2^10^10.  Charles R Greathouse IV, Sep 26 2016


LINKS

Table of n, a(n) for n=1..7.
Rémy Sigrist, PARI/GP program for A277028


EXAMPLE

32767 is not pandigital in any base b between 2 and 6:
b 32767 in base b Missing digits
  
2 111111111111111 0
3 1122221121 0
4 13333333 0, 2
5 2022032 1, 4
6 411411 0, 2, 3, 5
Moreover, 32767 is too small to be pandigital in any base b > 6, hence 32767 is in the sequence.


PROG

(PARI) See Sigrist link.


CROSSREFS

Cf. A055085, A171102.
Sequence in context: A030521 A105767 A063896 * A156895 A074047 A121810
Adjacent sequences: A277025 A277026 A277027 * A277029 A277030 A277031


KEYWORD

nonn,base


AUTHOR

Rémy Sigrist, Sep 25 2016


STATUS

approved



