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A211182 as a simple table

n a(n)
0 1
1 -1
2 0
3 3
4 4
5 15
6 54
7 245
8 1240
9 7119
10 45290
11 317229
12 2423268
13 20055607
14 178747646
15 1706919045
16 17386518448
17 188166282399
18 2156226542802
19 26081233464413
20 332076574410940
21 4439536794401415
22 62178531797006438
23 910433903838620853
24 13910405388847664904

[1,-1,0,3,4,15,54,245,1240,7119,45290,317229,
 2423268,20055607,178747646,1706919045,17386518448,
 188166282399,2156226542802,26081233464413,
 332076574410940,4439536794401415,
 62178531797006438,910433903838620853,
 13910405388847664904]

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Last modified October 1 08:39 EDT 2020. Contains 337442 sequences. (Running on oeis4.)