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A207137 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 17
5 171
6 3171
7 101741
8 7181615
9 1274607729
10 428568152553
11 223160743256395
12 185627109707405932
13 320952534083059792786
14 1367454166673309618606950
15 11078799748881429582280609036
16 137939599816546528357634500253053
17 2679390013936303204526656964298150849

[1,1,2,4,17,171,3171,101741,7181615,1274607729,
 428568152553,223160743256395,185627109707405932,
 320952534083059792786,1367454166673309618606950,
 11078799748881429582280609036,
 137939599816546528357634500253053,
 2679390013936303204526656964298150849]

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Last modified February 21 01:03 EST 2020. Contains 332086 sequences. (Running on oeis4.)