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A051298 as a simple table

na(n)
02
13
213
34
417
55
6133
774
8294
9207
1032
116
12501
1338
141089
15440
167
17215
183146
191859
2059
218
225005
231092
2467
259
2627599
2719916
2811466
295194
301810
31468
3258344
3347515
3431382
3516660
367004
372278
3894
3910
40105859
4178897
4248042
4323664
449282
45104
46222547
47184756

[2,3,13,4,17,5,133,74,294,207,32,6,501,38,1089,
 440,7,215,3146,1859,59,8,5005,1092,67,9,27599,
 19916,11466,5194,1810,468,58344,47515,31382,16660,
 7004,2278,94,10,105859,78897,48042,23664,9282,104,
 222547,184756]