A073497 - OEIS

A073497 as a simple table

n	a(n)
1	-1
2	1
3	4
4	9
5	14
6	23
7	32
8	45
9	58
10	71
11	90
12	107
13	128
14	153
15	178
16	203
17	230
18	263
19	294
20	329
21	368
22	405
23	446
24	487
25	528
26	575
27	626
28	677
29	732
30	787
31	834
32	893
33	952
34	1017
35	1076
36	1145
37	1212
38	1281
39	1354
40	1427
41	1502
42	1583
43	1658
44	1743
45	1828
46	1917
47	1998
48	2081
49	2174
50	2271
51	2368

[-1,1,4,9,14,23,32,45,58,71,90,107,128,153,178, 203,230,263,294,329,368,405,446,487,528,575,626, 677,732,787,834,893,952,1017,1076,1145,1212,1281, 1354,1427,1502,1583,1658,1743,1828,1917,1998,2081, 2174,2271,2368]