|
| |
|
|
A262572
|
|
Concatenation of the numbers from 1 to n but omitting 2.
|
|
3
|
|
|
|
1, 13, 134, 1345, 13456, 134567, 1345678, 13456789, 1345678910, 134567891011, 13456789101112, 1345678910111213, 134567891011121314, 13456789101112131415, 1345678910111213141516, 134567891011121314151617, 13456789101112131415161718, 1345678910111213141516171819, 134567891011121314151617181920
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
Table of n, a(n) for n=1..19.
|
|
|
MATHEMATICA
|
DeleteDuplicates[Table[FromDigits[Flatten[IntegerDigits[Complement[Range[n], {2}]]]], {n, 20}]] (* Robert Price, Nov 05 2018 *)
|
|
|
CROSSREFS
|
For primes see A262298.
Cf. A007908, A262299, A262571-A262582.
See A262300 for more about this problem.
Sequence in context: A228277 A221153 A297335 * A132935 A132930 A130774
Adjacent sequences: A262569 A262570 A262571 * A262573 A262574 A262575
|
|
|
KEYWORD
|
nonn,base
|
|
|
AUTHOR
|
N. J. A. Sloane, Sep 25 2015
|
|
|
STATUS
|
approved
|
| |
|
|
