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A268042 as a simple table

n a(n)
0 1
1 3
2 8
3 20
4 57
5 166
6 538
7 1762
8 6045
9 21040
10 74628
11 267598
12 970134
13 3544416
14 13043650
15 48283236
16 179665425
17 671564330
18 2520312810
19 9492124534
20 35863942748
21 135893383596
22 516258841134
23 1965906973886
24 7502329984510
25 28687263026656
26 109893836400756
27 421684916479018

[1,3,8,20,57,166,538,1762,6045,21040,74628,267598,
 970134,3544416,13043650,48283236,179665425,
 671564330,2520312810,9492124534,35863942748,
 135893383596,516258841134,1965906973886,
 7502329984510,28687263026656,109893836400756,
 421684916479018]

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Last modified May 16 05:56 EDT 2024. Contains 372549 sequences. (Running on oeis4.)