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A275057 as a simple table

n a(n)
0 0
1 0
2 1
3 1
4 3
5 6
6 17
7 41
8 116
9 313
10 895
11 2550
12 7450
13 21881
14 65168
15 195370
16 591007
17 1798718
18 5510023
19 16966529
20 52506837
21 163200904
22 509323732
23 1595311747
24 5013746254
25 15805787496
26 49969942138
27 158396065350
28 503317495573
29 1602973785463
30 5116010587910
31 16360492172347

[0,0,1,1,3,6,17,41,116,313,895,2550,7450,21881,
 65168,195370,591007,1798718,5510023,16966529,
 52506837,163200904,509323732,1595311747,
 5013746254,15805787496,49969942138,158396065350,
 503317495573,1602973785463,5116010587910,
 16360492172347]

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Last modified July 28 23:26 EDT 2021. Contains 346340 sequences. (Running on oeis4.)