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A086624 as a simple table

na(n)
01
11
24
319
4100
5570
63442
721685
8141112
9941990
106419174
1144493000
12312818326
132226155632
1416008452202
15116167346499
16849724397580
176259403310366
1846399703925202
19345894094030552

[1,1,4,19,100,570,3442,21685,141112,941990,
 6419174,44493000,312818326,2226155632,16008452202,
 116167346499,849724397580,6259403310366,
 46399703925202,345894094030552]