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A166091 as a simple table

na(n)
00
11
22
33
479
54
65
7151
88
9103
107
11175
1214
13409
1422
159
16223
1715
18589
1943
2010
2111
22265
2325
24998
25143
2631
2712
2813
29275
3032
311297
32157
3373
3420
3516
3617
37283
3862
391364
40182
41158
4255
4328
446
4519
46361
4769
481891
49293
50164
51183
5234
5326
5452
5521
56373
5774
581952
59397
60401

[0,1,2,3,79,4,5,151,8,103,7,175,14,409,22,9,223,
 15,589,43,10,11,265,25,998,143,31,12,13,275,32,
 1297,157,73,20,16,17,283,62,1364,182,158,55,28,6,
 19,361,69,1891,293,164,183,34,26,52,21,373,74,
 1952,397,401]