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A020875 as a simple table

n a(n)
0 0
1 4
2 12
3 36
4 72
5 140
6 228
7 364
8 528
9 756
10 1020
11 1364
12 1752
13 2236
14 2772
15 3420
16 4128
17 4964
18 5868
19 6916
20 8040
21 9324
22 10692
23 12236
24 13872
25 15700
26 17628
27 19764
28 22008
29 24476
30 27060
31 29884
32 32832
33 36036
34 39372

[0,4,12,36,72,140,228,364,528,756,1020,1364,1752,
 2236,2772,3420,4128,4964,5868,6916,8040,9324,
 10692,12236,13872,15700,17628,19764,22008,24476,
 27060,29884,32832,36036,39372]

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Last modified April 16 01:40 EDT 2024. Contains 371696 sequences. (Running on oeis4.)