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A137466 as a simple table

na(n)
01
1121
212121
31212121
4121212121
512121212121
61212121212121
7121212121212121
812121212121212121
91212121212121212121
10121212121212121212121
1112121212121212121212121
121212121212121212121212121
13121212121212121212121212121
1412121212121212121212121212121

[1,121,12121,1212121,121212121,12121212121,
 1212121212121,121212121212121,12121212121212121,
 1212121212121212121,121212121212121212121,
 12121212121212121212121,1212121212121212121212121,
 121212121212121212121212121,
 12121212121212121212121212121]

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Last modified February 1 05:32 EST 2025. Contains 380490 sequences.
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