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A094556 as a simple table

n a(n)
0 0
1 1
2 0
3 7
4 8
5 51
6 100
7 407
8 1008
9 3451
10 9500
11 30207
12 87208
13 268451
14 791700
15 2402407
16 7152608
17 21567051
18 64482700
19 193885007
20 580781208
21 1744091251
22 5228778500
23 15693326007
24 47065997008
25 141225953051
26 423621935100
27 1270977653407

[0,1,0,7,8,51,100,407,1008,3451,9500,30207,87208,
 268451,791700,2402407,7152608,21567051,64482700,
 193885007,580781208,1744091251,5228778500,
 15693326007,47065997008,141225953051,423621935100,
 1270977653407]

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Last modified May 19 13:25 EDT 2024. Contains 372694 sequences. (Running on oeis4.)