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A187259 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 0
5 0
6 2
7 11
8 39
9 122
10 358
11 1008
12 2770
13 7493
14 20049
15 53239
16 140603
17 369837
18 969883
19 2537685
20 6628215
21 17288950
22 45048932
23 117285552
24 305159262
25 793581817
26 2062948149
27 5361112383
28 13929080271
29 36183941553
30 93984332531
31 244094334682
32 633922350198
33 1646271999611

[0,0,0,0,0,0,2,11,39,122,358,1008,2770,7493,20049,
 53239,140603,369837,969883,2537685,6628215,
 17288950,45048932,117285552,305159262,793581817,
 2062948149,5361112383,13929080271,36183941553,
 93984332531,244094334682,633922350198,
 1646271999611]

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Last modified June 14 19:28 EDT 2021. Contains 345038 sequences. (Running on oeis4.)