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A018883 as a simple table

na(n)
22
33
412
521
621
721
860
9184
10184
11280
12280
13364
14364
15364
161456
173124
183124
195236
205236
215236
225236
2317185
2417185
2525249
2625249
2725249
2825249
2949504
3049504
3149504
3249504
3349504
3449504
3549504
3649504
37233776
38233776
39233776
40233776
41364144
42364144

[2,3,12,21,21,21,60,184,184,280,280,364,364,364,
 1456,3124,3124,5236,5236,5236,5236,17185,17185,
 25249,25249,25249,25249,49504,49504,49504,49504,
 49504,49504,49504,49504,233776,233776,233776,
 233776,364144,364144]