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A320740 as a simple table

n a(n)
0 1
1 1
2 3
3 7
4 20
5 63
6 233
7 966
8 4454
9 22404
10 121615
11 706306
12 4360204
13 28452601
14 195263881
15 1402218667
16 10482569938
17 81153069799
18 647261864569
19 5292447172261
20 44165731426846
21 374675276723042
22 3220404743013997
23 27967105952549269
24 244844437773618386

[1,1,3,7,20,63,233,966,4454,22404,121615,706306,
 4360204,28452601,195263881,1402218667,10482569938,
 81153069799,647261864569,5292447172261,
 44165731426846,374675276723042,3220404743013997,
 27967105952549269,244844437773618386]

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Last modified April 19 23:40 EDT 2024. Contains 371798 sequences. (Running on oeis4.)