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A026302 as a simple table

n a(n)
0 1
1 2
2 9
3 44
4 230
5 1242
6 6853
7 38376
8 217242
9 1239980
10 7123765
11 41141916
12 238637282
13 1389206210
14 8112107475
15 47495492400
16 278722764954
17 1638970147188
18 9654874654438
19 56965811111240
20 336590781348276
21 1991357644501170

[1,2,9,44,230,1242,6853,38376,217242,1239980,
 7123765,41141916,238637282,1389206210,8112107475,
 47495492400,278722764954,1638970147188,
 9654874654438,56965811111240,336590781348276,
 1991357644501170]

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Last modified March 29 09:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)