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A278046 as a simple table

n a(n)
1 1
2 4
3 18
4 44
5 124
6 186
7 424
8 636
9 1038
10 1378
11 2368
12 2852
13 4516
14 5510
15 7030
16 8734
17 12542
18 14168
19 19526
20 22206
21 26658
22 30728
23 40342
24 44190
25 54590
26 61402
27 72328
28 80196
29 99684
30 105644
31 129514
32 143162
33 161422
34 176926
35 201566
36 214538
37 255386
38 277160
39 307736
40 329096
41 384856
42 402412
43 466826
44 499166

[1,4,18,44,124,186,424,636,1038,1378,2368,2852,
 4516,5510,7030,8734,12542,14168,19526,22206,26658,
 30728,40342,44190,54590,61402,72328,80196,99684,
 105644,129514,143162,161422,176926,201566,214538,
 255386,277160,307736,329096,384856,402412,466826,
 499166]

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Last modified August 1 19:59 EDT 2021. Contains 346402 sequences. (Running on oeis4.)