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A237332 as a simple table

na(n)
181
2320
3320
41264
51660
61264
75120
88588
98588
105120
1120692
1245996
1358296
1445996
1520692
1682800
17242644
18414268
19414268
20242644
2182800
22332192
231279474
242870224
253988852
262870224
271279474
28332192
291346016
306740992
3119874388
3236921568

[81,320,320,1264,1660,1264,5120,8588,8588,5120,
 20692,45996,58296,45996,20692,82800,242644,414268,
 414268,242644,82800,332192,1279474,2870224,
 3988852,2870224,1279474,332192,1346016,6740992,
 19874388,36921568]