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A298836 as a simple table

n a(n)
1 0
2 3
3 9
4 21
5 127
6 513
7 2440
8 11458
9 53727
10 254534
11 1202650
12 5692243
13 26943691
14 127540324
15 603796896
16 2858444154
17 13532486972
18 64065914939
19 303303284790
20 1435912281177
21 6797962755503
22 32183241315912
23 152363457753491

[0,3,9,21,127,513,2440,11458,53727,254534,1202650,
 5692243,26943691,127540324,603796896,2858444154,
 13532486972,64065914939,303303284790,
 1435912281177,6797962755503,32183241315912,
 152363457753491]

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)