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A039680 formatted as a simple table:

n a(n)
1 1
2 12
3 124
4 1245
5 12457
6 1245710
7 124571011
8 12457101113
9 1245710111316
10 124571011131619
11 12457101113161920
12 1245710111316192023
13 124571011131619202325 

[1,12,124,1245,12457,1245710,124571011,
 12457101113,1245710111316,124571011131619,
 12457101113161920,1245710111316192023,
 124571011131619202325]

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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