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A195569 as a simple table

n a(n)
1 4
2 15
3 209
4 1116
5 3807
6 53985
7 287844
8 982255
9 13927857
10 74262716
11 253417919
12 3593333185
13 19159492804
14 65380840911
15 927066033809
16 4943074880796
17 16868003537055
18 239179443389601
19 1275294159752484
20 4351879531719343
21 61707369328483185

[4,15,209,1116,3807,53985,287844,982255,13927857,
 74262716,253417919,3593333185,19159492804,
 65380840911,927066033809,4943074880796,
 16868003537055,239179443389601,1275294159752484,
 4351879531719343,61707369328483185]

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Last modified May 13 21:17 EDT 2024. Contains 372523 sequences. (Running on oeis4.)