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A162539 as a simple table

n a(n)
0 1
1 6
2 21
3 55
4 120
5 231
6 405
7 660
8 1014
9 1484
10 2085
11 2829
12 3724
13 4773
14 5973
15 7315
16 8784
17 10359
18 12013
19 13713
20 15420
21 17091
22 18681
23 20145
24 21440
25 22527
26 23373
27 23952
28 24246
29 24246
30 23952
31 23373
32 22527
33 21440
34 20145
35 18681
36 17091
37 15420
38 13713

[1,6,21,55,120,231,405,660,1014,1484,2085,2829,
 3724,4773,5973,7315,8784,10359,12013,13713,15420,
 17091,18681,20145,21440,22527,23373,23952,24246,
 24246,23952,23373,22527,21440,20145,18681,17091,
 15420,13713]

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Last modified February 19 16:24 EST 2020. Contains 332045 sequences. (Running on oeis4.)