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A307933 as a simple table

na(n)
3120
4408
51200
63240
78330
820720
950418
10120760
11285846
12670416
131560728
143611020
158311110
1619042656
1743459344
1898838684
19224091320
20506660240
211142669766
222571214756
235773744326
2412940614624
2528953267050
2664676245192
27144261049680
28321334401528
29714843635370
301588357198980

[120,408,1200,3240,8330,20720,50418,120760,285846,
 670416,1560728,3611020,8311110,19042656,43459344,
 98838684,224091320,506660240,1142669766,
 2571214756,5773744326,12940614624,28953267050,
 64676245192,144261049680,321334401528,
 714843635370,1588357198980]