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A274393 as a simple table

n a(n)
1 1
2 2
3 9
4 56
5 545
6 6696
7 100009
8 1756112
9 35480673
10 811332080
11 20696592521
12 583009540488
13 17972297981521
14 601961695890296
15 21765379980020265
16 844991974575946016
17 35056808550027808961
18 1547900555791042958688
19 72474037424646843142153
20 3586609339433026549298840
21 187062738581835989450074161
22 10255505482370456224398408872
23 589611389520200188085133153449

[1,2,9,56,545,6696,100009,1756112,35480673,
 811332080,20696592521,583009540488,17972297981521,
 601961695890296,21765379980020265,
 844991974575946016,35056808550027808961,
 1547900555791042958688,72474037424646843142153,
 3586609339433026549298840,
 187062738581835989450074161,
 10255505482370456224398408872,
 589611389520200188085133153449]

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Last modified March 28 13:25 EDT 2024. Contains 371254 sequences. (Running on oeis4.)