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A279271 as a simple table

n a(n)
0 1
1 1
2 3
3 12
4 57
5 320
6 2065
7 14954
8 119585
9 1044184
10 9867633
11 100185294
12 1086173121
13 12510549116
14 152422123321
15 1956974934290
16 26391647743937
17 372769201632784
18 5500416368181921
19 84594395013757398
20 1353277808896178145
21 22476374660911200068
22 386925983827921358665
23 6893254434792968631674

[1,1,3,12,57,320,2065,14954,119585,1044184,
 9867633,100185294,1086173121,12510549116,
 152422123321,1956974934290,26391647743937,
 372769201632784,5500416368181921,
 84594395013757398,1353277808896178145,
 22476374660911200068,386925983827921358665,
 6893254434792968631674]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)