A000123 - OEIS

A000123 as a simple table

n	a(n)
0	1
1	2
2	4
3	6
4	10
5	14
6	20
7	26
8	36
9	46
10	60
11	74
12	94
13	114
14	140
15	166
16	202
17	238
18	284
19	330
20	390
21	450
22	524
23	598
24	692
25	786
26	900
27	1014
28	1154
29	1294
30	1460
31	1626
32	1828
33	2030
34	2268
35	2506
36	2790
37	3074
38	3404
39	3734
40	4124
41	4514
42	4964
43	5414
44	5938
45	6462
46	7060
47	7658
48	8350
49	9042
50	9828

[1,2,4,6,10,14,20,26,36,46,60,74,94,114,140,166, 202,238,284,330,390,450,524,598,692,786,900,1014, 1154,1294,1460,1626,1828,2030,2268,2506,2790,3074, 3404,3734,4124,4514,4964,5414,5938,6462,7060,7658, 8350,9042,9828]