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A297316 as a simple table

n a(n)
1 1
2 21
3 117
4 497
5 2577
6 13937
7 72541
8 375054
9 1951949
10 10170792
11 52930039
12 275412159
13 1433386475
14 7460147264
15 38825258091
16 202060807970
17 1051605128451
18 5472968149750
19 28483454530439
20 148239012444720
21 771493812884305

[1,21,117,497,2577,13937,72541,375054,1951949,
 10170792,52930039,275412159,1433386475,7460147264,
 38825258091,202060807970,1051605128451,
 5472968149750,28483454530439,148239012444720,
 771493812884305]

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Last modified May 19 05:04 EDT 2022. Contains 353826 sequences. (Running on oeis4.)