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A103715 as a simple table

n a(n)
1 0
2 0
3 1
4 3
5 18
6 22
7 119
8 285
9 1516
10 1844
11 9797
12 23407
13 124334
14 151226
15 803275
16 1919129
17 10193912
18 12398728
19 65858793
20 157345211
21 835776490
22 1016544510
23 5399617791
24 12900388213
25 68523478308
26 83344251132
27 442702800109

[0,0,1,3,18,22,119,285,1516,1844,9797,23407,
 124334,151226,803275,1919129,10193912,12398728,
 65858793,157345211,835776490,1016544510,
 5399617791,12900388213,68523478308,83344251132,
 442702800109]

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Last modified February 27 03:50 EST 2020. Contains 332299 sequences. (Running on oeis4.)