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A243465 as a simple table

n a(n)
0 0
1 0
2 0
3 180
4 4890
5 36028
6 154434
7 488660
8 1271450
9 2883900
10 5907298
11 11182644
12 19877850
13 33562620
14 54291010
15 84691668
16 128065754
17 188492540
18 270942690
19 381399220
20 526986138
21 716104764
22 958577730
23 1265800660
24 1650901530
25 2128907708
26 2716920674
27 3434298420

[0,0,0,180,4890,36028,154434,488660,1271450,
 2883900,5907298,11182644,19877850,33562620,
 54291010,84691668,128065754,188492540,270942690,
 381399220,526986138,716104764,958577730,
 1265800660,1650901530,2128907708,2716920674,
 3434298420]

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Last modified February 29 02:52 EST 2024. Contains 370401 sequences. (Running on oeis4.)