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A293737 as a simple table

n a(n)
0 1
1 1
2 3
3 7
4 20
5 54
6 164
7 500
8 1629
9 5462
10 19164
11 69457
12 261154
13 1012164
14 4045640
15 16611121
16 70001515
17 301922104
18 1331128134
19 5986321599
20 27426419974
21 127801386949
22 605016657100
23 2906093083727
24 14149469612919
25 69762426194708
26 348016146152252
27 1755188873640756

[1,1,3,7,20,54,164,500,1629,5462,19164,69457,
 261154,1012164,4045640,16611121,70001515,
 301922104,1331128134,5986321599,27426419974,
 127801386949,605016657100,2906093083727,
 14149469612919,69762426194708,348016146152252,
 1755188873640756]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)