A037167 - OEIS

A037167 as a simple table

n	a(n)
1	3
2	10
3	28
4	66
5	130
6	204
7	304
8	414
9	638
10	868
11	1110
12	1476
13	1720
14	1974
15	2438
16	3068
17	3538
18	4020
19	4686
20	5110
21	5688
22	6474
23	7298
24	8536
25	9696
26	10300
27	10914
28	11554
29	12204
30	14224
31	16506
32	17810
33	18904
34	20562
35	22348
36	23550
37	25428
38	27054
39	28718
40	30788
41	32218

[3,10,28,66,130,204,304,414,638,868,1110,1476, 1720,1974,2438,3068,3538,4020,4686,5110,5688,6474, 7298,8536,9696,10300,10914,11554,12204,14224, 16506,17810,18904,20562,22348,23550,25428,27054, 28718,30788,32218]