A122963 - cp's OEIS frontend

A122963 Triangular numbers with semiprime indices.

n	a(n)
1	10
2	21
3	45
4	55
5	105
6	120
7	231
8	253
9	325
10	351
11	561
12	595
13	630
14	741
15	780
16	1081
17	1225
18	1326
19	1540
20	1653
21	1711
22	1953
23	2145
24	2415
25	2775
26	3003
27	3403
28	3655
29	3741
30	3828
31	4186
32	4371
33	4465
34	4560
35	5671
36	6216
37	6670
38	7021
39	7140
40	7381
41	7503
42	7626
43	8385
44	8911
45	9045
46	10011

[10, 21, 45, 55, 105, 120, 231, 253, 325, 351, 561, 595, 630, 741, 780, 1081, 1225, 1326, 1540, 1653, 1711, 1953, 2145, 2415, 2775, 3003, 3403, 3655, 3741, 3828, 4186, 4371, 4465, 4560, 5671, 6216, 6670, 7021, 7140, 7381, 7503, 7626, 8385, 8911, 9045, 10011]

cp's OEIS Frontend

A122963 Triangular numbers with semiprime indices.

Table of values

List of values