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A194460 as a simple table

n a(n)
1 1
2 4
3 18
4 82
5 370
6 1648
7 7252
8 31582
9 136338
10 584248
11 2488156
12 10540484
13 44450068
14 186715072
15 781628008
16 3262239862
17 13579324498
18 56391614632
19 233686316428
20 966556003132
21 3990942300508
22 16453094542432
23 67733512006168

[1,4,18,82,370,1648,7252,31582,136338,584248,
 2488156,10540484,44450068,186715072,781628008,
 3262239862,13579324498,56391614632,233686316428,
 966556003132,3990942300508,16453094542432,
 67733512006168]

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Last modified April 25 09:24 EDT 2024. Contains 371967 sequences. (Running on oeis4.)