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A181882 as a simple table

na(n)
12
21
34
43
58
693
738
8113
968
10123
11190
12163
13210
14173
15554
16203
17584
18213
19706
20223
2110078
22423
2310178
241133
2510278
262143
2710578
282243
2911088
302743
3111188
323153
3311588
343863
3511688
364373
3711988
384573
3912088
405383
4112588
425593

[2,1,4,3,8,93,38,113,68,123,190,163,210,173,554,
 203,584,213,706,223,10078,423,10178,1133,10278,
 2143,10578,2243,11088,2743,11188,3153,11588,3863,
 11688,4373,11988,4573,12088,5383,12588,5593]