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A001369 formatted as a simple table:

n a(n)
1 1
2 23
3 456
4 7891
5 1234
6 567891
7 123456
8 78910123
9 456789101
10 2345678910
11 12345678910
12 123456789101
13 2345678910123
14 45678910123456
15 789101234567891
16 123456789101234

[1,23,456,7891,1234,567891,123456,78910123,
 456789101,2345678910,12345678910,123456789101,
 2345678910123,45678910123456,789101234567891,
 123456789101234]

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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