A077173 - OEIS

A077173 as a simple table

n	a(n)
1	2
2	1
3	3
4	7
5	11
6	15
7	22
8	29
9	37
10	44
11	56
12	67
13	78
14	92
15	106
16	119
17	136
18	154
19	171
20	188
21	210
22	230
23	252
24	275
25	299
26	323
27	349
28	375
29	402
30	430
31	460
32	491
33	522
34	555
35	588
36	623
37	658
38	694
39	731
40	769
41	809
42	849
43	890
44	932
45	975
46	1019
47	1064
48	1110
49	1157
50	1205
51	1255

[2,1,3,7,11,15,22,29,37,44,56,67,78,92,106,119, 136,154,171,188,210,230,252,275,299,323,349,375, 402,430,460,491,522,555,588,623,658,694,731,769, 809,849,890,932,975,1019,1064,1110,1157,1205,1255]