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A231458 as a simple table

na(n)
17
28
315
420
532
656
7111
8230
9501
101108
112494
125646
1312867
1429400
1567363
16154548
17355012
18816044
191876871
204318210
219937849
2222874740
2352659602
24121237426
25279141179
26642732036
271479959127
283407837396
297847200520
3018069880640

[7,8,15,20,32,56,111,230,501,1108,2494,5646,12867,
 29400,67363,154548,355012,816044,1876871,4318210,
 9937849,22874740,52659602,121237426,279141179,
 642732036,1479959127,3407837396,7847200520,
 18069880640]