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A178275 as a simple table

n a(n)
1 0
2 0
3 1441
4 22624
5 253690
6 1324160
7 6962675
8 24325376
9 80776164
10 225474240
11 601191285
12 1366506400
13 3152419966
14 6455003584
15 12902747495
16 24381528320
17 45355096520
18 78794712576
19 137109487689
20 225795051360
21 369875389570

[0,0,1441,22624,253690,1324160,6962675,24325376,
 80776164,225474240,601191285,1366506400,
 3152419966,6455003584,12902747495,24381528320,
 45355096520,78794712576,137109487689,225795051360,
 369875389570]

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Last modified January 24 19:03 EST 2022. Contains 350565 sequences. (Running on oeis4.)