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A326267 as a simple table

n a(n)
0 1
1 0
2 2
3 9
4 112
5 1585
6 28776
7 637189
8 16725136
9 510567201
10 17872335280
11 709140147661
12 31587858029256
13 1566848912178433
14 85946841477148120
15 5181755738815497885
16 341518373893520290336
17 24487048531932288330049
18 1901736820850206799775456
19 159346732413596476282342669
20 14353534016946934243615057240
21 1385413661318328442225223922081

[1,0,2,9,112,1585,28776,637189,16725136,510567201,
 17872335280,709140147661,31587858029256,
 1566848912178433,85946841477148120,
 5181755738815497885,341518373893520290336,
 24487048531932288330049,1901736820850206799775456,
 159346732413596476282342669,
 14353534016946934243615057240,
 1385413661318328442225223922081]

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Last modified December 7 22:50 EST 2021. Contains 349590 sequences. (Running on oeis4.)