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A123298 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
10 0
11 2
12 0
13 0
14 0
15 0
16 0
17 4
18 6
19 18
20 14
21 26
22 84
23 88
24 46
25 176
26 380
27 812
28 844
29 1770
30 2164
31 5554
32 9244
33 25384
34 62092
35 68176
36 85762
37 304892
38 855072
39 1229050
40 1805096

[0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,4,6,18,14,26,84,
 88,46,176,380,812,844,1770,2164,5554,9244,25384,
 62092,68176,85762,304892,855072,1229050,1805096]

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Last modified April 16 17:36 EDT 2024. Contains 371749 sequences. (Running on oeis4.)