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A126858 as a simple table

n a(n)
0 0
1 0
2 1
3 8
4 30
5 80
6 180
7 336
8 620
9 960
10 1590
11 2200
12 3416
13 4368
14 6440
15 7920
16 11160
17 13056
18 18333
19 20520
20 27860
21 31360
22 41052
23 44528
24 59760
25 62400
26 80990
27 87120
28 109872
29 113680
30 147960
31 148800
32 188976
33 196416
34 240210
35 243040
36 311910
37 303696
38 376580
39 385840

[0,0,1,8,30,80,180,336,620,960,1590,2200,3416,
 4368,6440,7920,11160,13056,18333,20520,27860,
 31360,41052,44528,59760,62400,80990,87120,109872,
 113680,147960,148800,188976,196416,240210,243040,
 311910,303696,376580,385840]

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Last modified September 25 00:48 EDT 2020. Contains 337333 sequences. (Running on oeis4.)