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A248027 as a simple table

n a(n)
1 0
2 0
3 0
4 4
5 69
6 554
7 3100
8 13288
9 47492
10 147050
11 407568
12 1030912
13 2419025
14 5324684
15 11099416
16 22065120
17 42085344
18 77378556
19 137705904
20 237996060
21 400624581
22 658434694
23 1058839380
24 1669118984
25 2583424948
26 3931632406
27 5890783808
28 8699293304
29 12674960961

[0,0,0,4,69,554,3100,13288,47492,147050,407568,
 1030912,2419025,5324684,11099416,22065120,
 42085344,77378556,137705904,237996060,400624581,
 658434694,1058839380,1669118984,2583424948,
 3931632406,5890783808,8699293304,12674960961]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)