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A211553 as a simple table

na(n)
1181
2521
31239
42865
56321
614009
730379
866865
9145437
10322009
11708509
121586445
133542267
148034795
1518210199
1641826241
1796089585
18223154883
19518575357
201215390177
212850562247
226729628421
2315897536413
2437742249421
2589649505903

[181,521,1239,2865,6321,14009,30379,66865,145437,
 322009,708509,1586445,3542267,8034795,18210199,
 41826241,96089585,223154883,518575357,1215390177,
 2850562247,6729628421,15897536413,37742249421,
 89649505903]