A342469 - cp's OEIS frontend

A342469 Positive numbers that are triangular, square or pentagonal.

n	a(n)
1	1
2	3
3	4
4	5
5	6
6	9
7	10
8	12
9	15
10	16
11	21
12	22
13	25
14	28
15	35
16	36
17	45
18	49
19	51
20	55
21	64
22	66
23	70
24	78
25	81
26	91
27	92
28	100
29	105
30	117
31	120
32	121
33	136
34	144
35	145
36	153
37	169
38	171
39	176
40	190
41	196
42	210
43	225
44	231
45	247
46	253
47	256
48	276
49	287
50	289
51	300
52	324
53	325
54	330
55	351
56	361
57	376
58	378
59	400

[1, 3, 4, 5, 6, 9, 10, 12, 15, 16, 21, 22, 25, 28, 35, 36, 45, 49, 51, 55, 64, 66, 70, 78, 81, 91, 92, 100, 105, 117, 120, 121, 136, 144, 145, 153, 169, 171, 176, 190, 196, 210, 225, 231, 247, 253, 256, 276, 287, 289, 300, 324, 325, 330, 351, 361, 376, 378, 400]

cp's OEIS Frontend

A342469 Positive numbers that are triangular, square or pentagonal.

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	5
5	6
6	9
7	10
8	12
9	15
10	16
11	21
12	22
13	25
14	28
15	35
16	36
17	45
18	49
19	51
20	55
21	64
22	66
23	70
24	78
25	81
26	91
27	92
28	100
29	105
30	117
31	120
32	121
33	136
34	144
35	145
36	153
37	169
38	171
39	176
40	190
41	196
42	210
43	225
44	231
45	247
46	253
47	256
48	276
49	287
50	289
51	300
52	324
53	325
54	330
55	351
56	361
57	376
58	378
59	400

n	a(n)
1	1
2	3
3	4
4	5
5	6
6	9
7	10
8	12
9	15
10	16
11	21
12	22
13	25
14	28
15	35
16	36
17	45
18	49
19	51
20	55
21	64
22	66
23	70
24	78
25	81
26	91
27	92
28	100
29	105
30	117
31	120
32	121
33	136
34	144
35	145
36	153
37	169
38	171
39	176
40	190
41	196
42	210
43	225
44	231
45	247
46	253
47	256
48	276
49	287
50	289
51	300
52	324
53	325
54	330
55	351
56	361
57	376
58	378
59	400

n	a(n)
1	1
2	3
3	4
4	5
5	6
6	9
7	10
8	12
9	15
10	16
11	21
12	22
13	25
14	28
15	35
16	36
17	45
18	49
19	51
20	55
21	64
22	66
23	70
24	78
25	81
26	91
27	92
28	100
29	105
30	117
31	120
32	121
33	136
34	144
35	145
36	153
37	169
38	171
39	176
40	190
41	196
42	210
43	225
44	231
45	247
46	253
47	256
48	276
49	287
50	289
51	300
52	324
53	325
54	330
55	351
56	361
57	376
58	378
59	400