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A180786 as a simple table

n a(n)
1 0
2 0
3 7
4 30
5 142
6 502
7 1519
8 3828
9 9145
10 18966
11 38562
12 70202
13 127954
14 211261
15 357465
16 549988
17 875942
18 1273587
19 1941522
20 2705012
21 3966472
22 5325916
23 7599591
24 9892052
25 13772034
26 17476435
27 23770735
28 29625591
29 39617904
30 48129046
31 63654183
32 76396024

[0,0,7,30,142,502,1519,3828,9145,18966,38562,
 70202,127954,211261,357465,549988,875942,1273587,
 1941522,2705012,3966472,5325916,7599591,9892052,
 13772034,17476435,23770735,29625591,39617904,
 48129046,63654183,76396024]

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Last modified April 25 06:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)