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A252509 as a simple table

n a(n)
1 2055
2 3980
3 11476
4 28877
5 83016
6 252551
7 767176
8 2326656
9 7067545
10 21555438
11 65998872
12 202139805
13 619664176
14 1902757710
15 5844530563
16 17960909526
17 55236099834
18 169893963331
19 522684802558
20 1608599668122
21 4950903773021

[2055,3980,11476,28877,83016,252551,767176,
 2326656,7067545,21555438,65998872,202139805,
 619664176,1902757710,5844530563,17960909526,
 55236099834,169893963331,522684802558,
 1608599668122,4950903773021]

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Last modified May 23 15:54 EDT 2022. Contains 353976 sequences. (Running on oeis4.)