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A321181 as a simple table

na(n)
01
11
22
37
428
5262
63428
752289
81147221
930161625
10893291633
1130894822277
121214415301634
1352617692115135
142528123847871538
15133088227043557512
167574733515354756765
17466116310963215784930
1830810712157925101729430
192173319693639115252360852
20163247410881483617710298406

[1,1,2,7,28,262,3428,52289,1147221,30161625,
 893291633,30894822277,1214415301634,
 52617692115135,2528123847871538,
 133088227043557512,7574733515354756765,
 466116310963215784930,30810712157925101729430,
 2173319693639115252360852,
 163247410881483617710298406]