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A057138 as a simple table

n a(n)
0 0
1 1
2 21
3 321
4 4321
5 54321
6 654321
7 7654321
8 87654321
9 987654321
10 987654321
11 10987654321
12 210987654321
13 3210987654321
14 43210987654321
15 543210987654321
16 6543210987654321
17 76543210987654321
18 876543210987654321

[0,1,21,321,4321,54321,654321,7654321,87654321,
 987654321,987654321,10987654321,210987654321,
 3210987654321,43210987654321,543210987654321,
 6543210987654321,76543210987654321,
 876543210987654321]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)