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A138568 formatted as a simple table:

n a(n)
1 1
2 212
3 3212321
4 4321234321234
5 543212345432123454321
6 6543212345654321234565432123456
7 7654321234567654321234567654321234567654321 

[1,212,3212321,4321234321234,
 543212345432123454321,
 6543212345654321234565432123456,
 7654321234567654321234567654321234567654321]

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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