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A021464 as a simple table

n a(n)
0 1
1 19
2 248
3 2810
4 29871
5 307929
6 3126478
7 31504000
8 316245941
9 3168518639
10 31715571108
11 317307900390
12 3173840747611
13 31742218586149
14 317441248586138
15 3174507821007980
16 31745554950382881
17 317457933399054459

[1,19,248,2810,29871,307929,3126478,31504000,
 316245941,3168518639,31715571108,317307900390,
 3173840747611,31742218586149,317441248586138,
 3174507821007980,31745554950382881,
 317457933399054459]

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Last modified July 27 09:47 EDT 2021. Contains 346304 sequences. (Running on oeis4.)