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A168513 as a simple table

n a(n)
1 21
2 36
3 300
4 722
5 2493
6 4766
7 9459
8 13091
9 18484
10 18779
11 18048
12 12995
13 9122
14 4424
15 2160
16 639
17 234
18 48
19 8
20 0
21 0 

[21,36,300,722,2493,4766,9459,13091,18484,18779,
 18048,12995,9122,4424,2160,639,234,48,8,0,0]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)