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A280580 as a simple table

na(n)
01
11
21
32
46
51
65
730
815
91
1014
11140
12140
1328
141
1542
16630
171050
18420
1945
201
21132
222772
236930
244620
25990
2666
271
28429
2912012
3042042
3142042
3215015
332002
3491
351
361430
3751480
38240240
39336336
40180180
4140040
423640
43120
441
454862
46218790
471312740
482450448
491837836
50612612
5192820
526120
53153
541

[1,1,1,2,6,1,5,30,15,1,14,140,140,28,1,42,630,
 1050,420,45,1,132,2772,6930,4620,990,66,1,429,
 12012,42042,42042,15015,2002,91,1,1430,51480,
 240240,336336,180180,40040,3640,120,1,4862,218790,
 1312740,2450448,1837836,612612,92820,6120,153,1]