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A000900 as a simple table

na(n)
00
10
20
31
42
510
628
7106
8344
91272
104592
1117692
1269384
13283560
141191984
155171512
1623087168
17105883456
18498572416
192404766224
2011878871456
2159975885856
22309439708352
231628919330208
248746079933568
2547840206525056

[0,0,0,1,2,10,28,106,344,1272,4592,17692,69384,
 283560,1191984,5171512,23087168,105883456,
 498572416,2404766224,11878871456,59975885856,
 309439708352,1628919330208,8746079933568,
 47840206525056]