A276215 - OEIS

A276215 as a simple table

n	a(n)
1	3
2	7
3	13
4	19
5	26
6	34
7	42
8	51
9	61
10	72
11	83
12	95
13	108
14	121
15	135
16	150
17	165
18	181
19	197
20	214
21	231
22	249
23	267
24	286
25	306
26	326
27	347
28	368
29	389
30	411
31	434
32	457
33	481
34	505
35	530
36	555
37	580
38	606
39	633
40	660
41	687
42	715
43	744
44	773
45	802
46	832
47	862
48	893
49	924
50	955
51	988
52	1020
53	1053
54	1086

[3,7,13,19,26,34,42,51,61,72,83,95,108,121,135, 150,165,181,197,214,231,249,267,286,306,326,347, 368,389,411,434,457,481,505,530,555,580,606,633, 660,687,715,744,773,802,832,862,893,924,955,988, 1020,1053,1086]