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A239492 as a simple table

na(n)
00
10
22
33
44
56
66
78
89
910
1012
1112
1214
1315
1416
1518
1618
1720
1821
1922
2024
2124
2226
2327
2428
2530
2630
2732
2833
2934
3036
3136
3238
3339
3440
3542
3642
3744
3845
3946
4048
4148
4250
4351
4452
4554
4654
4756
4857
4958
5060
5160
5262
5363
5464
5566
5666
5768
5869
5970
6072
6172
6274
6375
6476
6578
6678
6780
6881
6982
7084
7184
7286
7387
7488
7590
7690

[0,0,2,3,4,6,6,8,9,10,12,12,14,15,16,18,18,20,21,
 22,24,24,26,27,28,30,30,32,33,34,36,36,38,39,40,
 42,42,44,45,46,48,48,50,51,52,54,54,56,57,58,60,
 60,62,63,64,66,66,68,69,70,72,72,74,75,76,78,78,
 80,81,82,84,84,86,87,88,90,90]