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A207662 as a simple table

n a(n)
1 9
2 81
3 198
4 870
5 3358
6 12040
7 47320
8 182192
9 676396
10 2611234
11 9988846
12 37623896
13 144190134
14 550120868
15 2085006194
16 7964169488
17 30353664882
18 115358871282
19 439963965434
20 1676145338780
21 6377929104862
22 24307253165970
23 92589759354554

[9,81,198,870,3358,12040,47320,182192,676396,
 2611234,9988846,37623896,144190134,550120868,
 2085006194,7964169488,30353664882,115358871282,
 439963965434,1676145338780,6377929104862,
 24307253165970,92589759354554]

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Last modified April 24 13:41 EDT 2024. Contains 371957 sequences. (Running on oeis4.)