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A138480 formatted as a simple table:

n a(n)
1 1210
2 2020
3 21200
4 3211000
5 42101000
6 521001000
7 6210001000
8 72100001000
9 821000001000
10 9210000001000

[1210,2020,21200,3211000,42101000,521001000,
 6210001000,72100001000,821000001000,
 9210000001000]

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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