OFFSET
1,2
COMMENTS
The only primes among the first 98 terms are 123467891011 and 123467891011121314151617. See A262552 for further primes in this sequence.
MATHEMATICA
DeleteDuplicates[Table[FromDigits[Flatten[IntegerDigits[Complement[Range[n], {5}]]]], {n, 20}]] (* Robert Price, Nov 05 2018 *)
Join[{1, 12, 123, 1234}, Table[FromDigits[Flatten[IntegerDigits/@Drop[Range[n], {5}]]], {n, 6, 20}]] (* Harvey P. Dale, Jan 28 2024 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Sep 25 2015
STATUS
approved