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A258799 as a simple table

n a(n)
0 1
1 1
2 3
3 13
4 61
5 324
6 1800
7 10340
8 60969
9 366486
10 2237120
11 13829487
12 86394782
13 544547651
14 3458637273
15 22113504345
16 142212705879
17 919294844898
18 5969839457411
19 38927450022860
20 254776529381625
21 1673102335692514
22 11020847332241873
23 72798664086854460

[1,1,3,13,61,324,1800,10340,60969,366486,2237120,
 13829487,86394782,544547651,3458637273,
 22113504345,142212705879,919294844898,
 5969839457411,38927450022860,254776529381625,
 1673102335692514,11020847332241873,
 72798664086854460]

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Last modified August 12 07:10 EDT 2022. Contains 356067 sequences. (Running on oeis4.)