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A027914 as a simple table

n a(n)
0 1
1 2
2 6
3 17
4 50
5 147
6 435
7 1290
8 3834
9 11411
10 34001
11 101400
12 302615
13 903632
14 2699598
15 8068257
16 24121674
17 72137547
18 215786649
19 645629160
20 1932081885
21 5782851966
22 17311097568
23 51828203475
24 155188936431
25 464732722872

[1,2,6,17,50,147,435,1290,3834,11411,34001,101400,
 302615,903632,2699598,8068257,24121674,72137547,
 215786649,645629160,1932081885,5782851966,
 17311097568,51828203475,155188936431,464732722872]

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Last modified November 17 08:17 EST 2018. Contains 317275 sequences. (Running on oeis4.)