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A148726 as a simple table

n a(n)
0 1
1 1
2 3
3 7
4 25
5 72
6 278
7 916
8 3672
9 13025
10 53751
11 200217
12 843672
13 3257716
14 13933910
15 55297282
16 239315186
17 970147542
18 4239127095
19 17480675840
20 76987864204
21 321968327531
22 1427398289337
23 6040117766051
24 26929613280450
25 115096541374645
26 515667082927505
27 2222925099783314
28 10001975287742135

[1,1,3,7,25,72,278,916,3672,13025,53751,200217,
 843672,3257716,13933910,55297282,239315186,
 970147542,4239127095,17480675840,76987864204,
 321968327531,1427398289337,6040117766051,
 26929613280450,115096541374645,515667082927505,
 2222925099783314,10001975287742135]

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Last modified March 29 05:16 EDT 2024. Contains 371264 sequences. (Running on oeis4.)