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A125818 as a simple table

n a(n)
1 1
2 1
3 19
4 55
5 433
6 1801
7 10963
8 52543
9 291457
10 1476145
11 7907059
12 40908583
13 216237169
14 1127920249
15 5931872371
16 31038388975
17 162918608257
18 853489829089
19 4476595998547
20 23462519091607
21 123027170158513
22 644917164874345
23 3381296222443411
24 17726184247750687

[1,1,19,55,433,1801,10963,52543,291457,1476145,
 7907059,40908583,216237169,1127920249,5931872371,
 31038388975,162918608257,853489829089,
 4476595998547,23462519091607,123027170158513,
 644917164874345,3381296222443411,
 17726184247750687]

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Last modified October 15 10:46 EDT 2019. Contains 328026 sequences. (Running on oeis4.)