A343578 - OEIS

A343578 as a simple table

n	a(n)
1	2
2	58
3	178
4	362
5	610
6	922
7	1298
8	1738
9	2242
10	2810
11	3442
12	4138
13	4898
14	5722
15	6610
16	7562
17	8578
18	9658
19	10802
20	12010
21	13282
22	14618
23	16018
24	17482
25	19010
26	20602
27	22258
28	23978
29	25762
30	27610
31	29522
32	31498
33	33538
34	35642
35	37810
36	40042
37	42338
38	44698
39	47122
40	49610
41	52162
42	54778
43	57458

[2,58,178,362,610,922,1298,1738,2242,2810,3442, 4138,4898,5722,6610,7562,8578,9658,10802,12010, 13282,14618,16018,17482,19010,20602,22258,23978, 25762,27610,29522,31498,33538,35642,37810,40042, 42338,44698,47122,49610,52162,54778,57458]