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A138568 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 May 26 13:59 EDT 2022. Contains 354092 sequences. (Running on oeis4.)