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A077310 as a simple table

n a(n)
1 2
2 34
3 45
4 56
5 678910
6 78
7 8910111213141516
8 9101112
9 1011121314151617
10 11121314151617181920
11 12131415161718192021
12 1314151617181920
13 14151617181920212223242526272829303132333435
14 15161718192021222324252627282930
15 1617181920
16 17181920
17 1819
18 1920212223242526

[2,34,45,56,678910,78,8910111213141516,9101112,
 1011121314151617,11121314151617181920,
 12131415161718192021,1314151617181920,
 14151617181920212223242526272829303132333435,
 15161718192021222324252627282930,1617181920,
 17181920,1819,1920212223242526]

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Last modified November 28 18:35 EST 2023. Contains 367419 sequences. (Running on oeis4.)