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A057964 as a simple table

na(n)
31
416
56
6160
7120
825
91280
101440
11600
1290
138960
1413440
158400
162520
17301
1857344
19107520
2089600
2140320
229632
23966
24344064
25774144
26806400
27483840
28173376
2934776
303025
311966080
325160960
336451200
344838400
352311680
36695520
37121000
389330

[1,16,6,160,120,25,1280,1440,600,90,8960,13440,
 8400,2520,301,57344,107520,89600,40320,9632,966,
 344064,774144,806400,483840,173376,34776,3025,
 1966080,5160960,6451200,4838400,2311680,695520,
 121000,9330]