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A115620 as a simple table

n a(n)
1 1
2 56
3 180
4 836
5 840
6 2400
7 4536
8 10584
9 10920
10 12540
11 17388
12 18720
13 23736
14 24864
15 25500
16 26220
17 23760
18 32376
19 39560
20 45356
21 53960
22 49680
23 77744
24 71208
25 60720
26 87032
27 62640
28 69120
29 63840
30 91776
31 76560
32 97128
33 118712
34 88560
35 83160

[1,56,180,836,840,2400,4536,10584,10920,12540,
 17388,18720,23736,24864,25500,26220,23760,32376,
 39560,45356,53960,49680,77744,71208,60720,87032,
 62640,69120,63840,91776,76560,97128,118712,88560,
 83160]

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Last modified November 27 20:49 EST 2021. Contains 349395 sequences. (Running on oeis4.)