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A134554 as a simple table

na(n)
00
1111
2111
3222
4333
5555
6888
7131313
8212121
9343434
10555555
11898989
12144144144
13233233233
14377377377
15610610610
16987987987
17159715971597
18258425842584
19418141814181
20676567656765
21109461094610946
22177111771117711

[0,111,111,222,333,555,888,131313,212121,343434,
 555555,898989,144144144,233233233,377377377,
 610610610,987987987,159715971597,258425842584,
 418141814181,676567656765,109461094610946,
 177111771117711]