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A053581 as a simple table

na(n)
01
13
210
332
4100
5308
6940
72852
88620
925988
1078220
11235172
12706540
132121668
146369100
1519115492
1657362860
17172121348
18516429580
191549419812
204648521580
2113946089028
2241839315660
23125520044132

[1,3,10,32,100,308,940,2852,8620,25988,78220,
 235172,706540,2121668,6369100,19115492,57362860,
 172121348,516429580,1549419812,4648521580,
 13946089028,41839315660,125520044132]