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A045925 as a simple table

na(n)
00
11
22
36
412
525
648
791
8168
9306
10550
11979
121728
133029
145278
159150
1615792
1727149
1846512
1979439
20135300
21229866
22389642
23659111
241112832
251875625
263156218
275303286
288898708
2914912641
3024961200
3141734339
3269705888
33116311074
34193898158
35322961275
36537492672

[0,1,2,6,12,25,48,91,168,306,550,979,1728,3029,
 5278,9150,15792,27149,46512,79439,135300,229866,
 389642,659111,1112832,1875625,3156218,5303286,
 8898708,14912641,24961200,41734339,69705888,
 116311074,193898158,322961275,537492672]