A135901 - OEIS

A135901 as a simple table

n	a(n)
0	1
1	2
2	4
3	7
4	12
5	18
6	26
7	36
8	47
9	60
10	75
11	92
12	111
13	132
14	154
15	178
16	204
17	232
18	262
19	294
20	328
21	364
22	402
23	442
24	484
25	527
26	572
27	619
28	668
29	719
30	772
31	827
32	884
33	943
34	1004
35	1067
36	1132
37	1199
38	1268
39	1339
40	1412
41	1487
42	1564
43	1643
44	1724
45	1807
46	1892
47	1978
48	2066
49	2156
50	2248

[1,2,4,7,12,18,26,36,47,60,75,92,111,132,154,178, 204,232,262,294,328,364,402,442,484,527,572,619, 668,719,772,827,884,943,1004,1067,1132,1199,1268, 1339,1412,1487,1564,1643,1724,1807,1892,1978,2066, 2156,2248]