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A075729 as a simple table

n a(n)
0 1
1 1
2 4
3 23
4 173
5 1602
6 17575
7 222497
8 3188806
9 50988405
10 899222457
11 17329515172
12 362164300173
13 8155216185781
14 196789115887252
15 5064722539020379
16 138457553073641465
17 4006059432756066914
18 122284085809137076203
19 3926775294104305483621
20 132313462760902116605534

[1,1,4,23,173,1602,17575,222497,3188806,50988405,
 899222457,17329515172,362164300173,8155216185781,
 196789115887252,5064722539020379,
 138457553073641465,4006059432756066914,
 122284085809137076203,3926775294104305483621,
 132313462760902116605534]

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Last modified March 18 12:10 EDT 2019. Contains 321283 sequences. (Running on oeis4.)