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A156398 as a simple table

n a(n)
0 1
1 2620
2 708256
3 24243520
4 154294582
5 253938600
6 1164072896
7 10953612400
8 25250999564
9 22620401127
10 101930271184
11 570443632816
12 781505368112
13 474109634808
14 1937140499056
15 9267607094192
16 12532444401442
17 7484174351906

[1,2620,708256,24243520,154294582,253938600,
 1164072896,10953612400,25250999564,22620401127,
 101930271184,570443632816,781505368112,
 474109634808,1937140499056,9267607094192,
 12532444401442,7484174351906]

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Last modified January 26 23:54 EST 2022. Contains 350601 sequences. (Running on oeis4.)