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A045996 as a simple table

n a(n)
1 0
2 4
3 76
4 516
5 2148
6 6768
7 17600
8 40120
9 82608
10 157252
11 280988
12 477012
13 775172
14 1214768
15 1844512
16 2725000
17 3930384
18 5550844
19 7692300
20 10482124
21 14066996
22 18619128
23 24337056
24 31449200
25 40212160
26 50921316
27 63907468
28 79542108

[0,4,76,516,2148,6768,17600,40120,82608,157252,
 280988,477012,775172,1214768,1844512,2725000,
 3930384,5550844,7692300,10482124,14066996,
 18619128,24337056,31449200,40212160,50921316,
 63907468,79542108]

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Last modified September 29 06:29 EDT 2020. Contains 337425 sequences. (Running on oeis4.)