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A240972 as a simple table

na(n)
11
26
310
428
572
6352
7240
8832
9672
102432
1117408
1212800
1347104
1455296
1541984
16126976
17950272
182162688
192424832
203211264
2118350080
225111808
2390177536
24377487360
2555574528
26394264576
27247463936
283422552064
29578813952
3014763950080

[1,6,10,28,72,352,240,832,672,2432,17408,12800,
 47104,55296,41984,126976,950272,2162688,2424832,
 3211264,18350080,5111808,90177536,377487360,
 55574528,394264576,247463936,3422552064,578813952,
 14763950080]