A324600 - cp's OEIS frontend

A324600 a(n) = (k(n)*(k(n) + 1))/2 with k = A018252 (nonprime numbers), for n >= 1.

n	a(n)
1	1
2	10
3	21
4	36
5	45
6	55
7	78
8	105
9	120
10	136
11	171
12	210
13	231
14	253
15	300
16	325
17	351
18	378
19	406
20	465
21	528
22	561
23	595
24	630
25	666
26	741
27	780
28	820
29	903
30	990
31	1035
32	1081
33	1176
34	1225
35	1275
36	1326
37	1378
38	1485
39	1540
40	1596
41	1653
42	1711
43	1830
44	1953
45	2016
46	2080
47	2145
48	2211
49	2346
50	2415
51	2485
52	2628
53	2775
54	2850
55	2926
56	3003
57	3081
58	3240
59	3321
60	3403
61	3570
62	3655
63	3741
64	3828
65	3916

[1, 10, 21, 36, 45, 55, 78, 105, 120, 136, 171, 210, 231, 253, 300, 325, 351, 378, 406, 465, 528, 561, 595, 630, 666, 741, 780, 820, 903, 990, 1035, 1081, 1176, 1225, 1275, 1326, 1378, 1485, 1540, 1596, 1653, 1711, 1830, 1953, 2016, 2080, 2145, 2211, 2346, 2415, 2485, 2628, 2775, 2850, 2926, 3003, 3081, 3240, 3321, 3403, 3570, 3655, 3741, 3828, 3916]

cp's OEIS Frontend

A324600 a(n) = (k(n)*(k(n) + 1))/2 with k = A018252 (nonprime numbers), for n >= 1.

Table of values

List of values