A075408 - OEIS

A075408 as a simple table

n	a(n)
1	1
2	4
3	16
4	36
5	100
6	196
7	256
8	400
9	576
10	676
11	1296
12	1600
13	2916
14	3136
15	4356
16	5476
17	7056
18	8100
19	8836
20	12100
21	13456
22	14400
23	15376
24	15876
25	16900
26	17956
27	21316
28	22500
29	24336
30	25600
31	28900
32	30976
33	32400
34	33856
35	41616
36	42436
37	44100
38	50176
39	52900
40	55696

[1,4,16,36,100,196,256,400,576,676,1296,1600,2916, 3136,4356,5476,7056,8100,8836,12100,13456,14400, 15376,15876,16900,17956,21316,22500,24336,25600, 28900,30976,32400,33856,41616,42436,44100,50176, 52900,55696]