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A219412 as a simple table

n a(n)
1 1
2 21
3 181
4 1199
5 8173
6 57097
7 398375
8 2773933
9 19314785
10 134507787
11 936720513
12 6523315045
13 45428247915
14 316361693953
15 2203138855813
16 15342630706087
17 106845881585421
18 744073337324881
19 5181717103636911
20 36085410931557557

[1,21,181,1199,8173,57097,398375,2773933,19314785,
 134507787,936720513,6523315045,45428247915,
 316361693953,2203138855813,15342630706087,
 106845881585421,744073337324881,5181717103636911,
 36085410931557557]

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Last modified May 27 12:49 EDT 2022. Contains 354097 sequences. (Running on oeis4.)