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A051666 as a simple table

na(n)
00
11
21
34
42
54
69
76
86
99
1016
1115
1212
1315
1416
1525
1631
1727
1827
1931
2025
2136
2256
2358
2454
2558
2656
2736
2849
2992
30114
31112
32112
33114
3492
3549
3664
37141
38206
39226
40224
41226
42206
43141
4464
4581
46205
47347
48432
49450
50450
51432
52347
53205
5481
55100
56286
57552
58779
59882
60900
61882
62779

[0,1,1,4,2,4,9,6,6,9,16,15,12,15,16,25,31,27,27,
 31,25,36,56,58,54,58,56,36,49,92,114,112,112,114,
 92,49,64,141,206,226,224,226,206,141,64,81,205,
 347,432,450,450,432,347,205,81,100,286,552,779,
 882,900,882,779]