A060555 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A060555 as a simple table

n	a(n)
1	1
2	12
3	123
4	1234
5	12345
6	123456
7	1234567
8	12345678
9	123456789
10	10123456789
11	1011123456789
12	101111223456789
13	10111121323456789
14	1011112131423456789
15	101111213141523456789
16	10111121314151623456789

[1,12,123,1234,12345,123456,1234567,12345678, 123456789,10123456789,1011123456789, 101111223456789,10111121323456789, 1011112131423456789,101111213141523456789, 10111121314151623456789]