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A148171 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 11
5 32
6 106
7 356
8 1276
9 4657
10 17645
11 68100
12 269090
13 1079751
14 4402729
15 18173798
16 75897938
17 320069369
18 1361833054
19 5839681294
20 25218300840
21 109593862795
22 479006422233
23 2104508479189
24 9289937873731
25 41186208290004
26 183320357570998
27 818938861833152
28 3670712111578903

[1,1,2,4,11,32,106,356,1276,4657,17645,68100,
 269090,1079751,4402729,18173798,75897938,
 320069369,1361833054,5839681294,25218300840,
 109593862795,479006422233,2104508479189,
 9289937873731,41186208290004,183320357570998,
 818938861833152,3670712111578903]

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Last modified October 17 20:05 EDT 2019. Contains 328129 sequences. (Running on oeis4.)