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A001621 as a simple table

n a(n)
0 0
1 2
2 12
3 42
4 110
5 240
6 462
7 812
8 1332
9 2070
10 3080
11 4422
12 6162
13 8372
14 11130
15 14520
16 18632
17 23562
18 29412
19 36290
20 44310
21 53592
22 64262
23 76452
24 90300
25 105950
26 123552
27 143262
28 165242
29 189660
30 216690
31 246512
32 279312
33 315282
34 354620
35 397530
36 444222
37 494912
38 549822

[0,2,12,42,110,240,462,812,1332,2070,3080,4422,
 6162,8372,11130,14520,18632,23562,29412,36290,
 44310,53592,64262,76452,90300,105950,123552,
 143262,165242,189660,216690,246512,279312,315282,
 354620,397530,444222,494912,549822]

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Last modified May 12 03:10 EDT 2024. Contains 372431 sequences. (Running on oeis4.)