A177029 - cp's OEIS frontend

A177029 Numbers that have exactly two different representations as polygonal numbers.

n	a(n)
1	6
2	9
3	10
4	12
5	16
6	18
7	22
8	24
9	25
10	27
11	30
12	33
13	34
14	35
15	39
16	40
17	42
18	46
19	48
20	49
21	52
22	54
23	57
24	58
25	60
26	63
27	65
28	69
29	72
30	76
31	82
32	84
33	85
34	87
35	88
36	90
37	92
38	93
39	94
40	95
41	99
42	102
43	106
44	108
45	114
46	115
47	118
48	121
49	123
50	124
51	125
52	129
53	130
54	132
55	133
56	138
57	142
58	147
59	150
60	155
61	159
62	160
63	162
64	166
65	168

[6, 9, 10, 12, 16, 18, 22, 24, 25, 27, 30, 33, 34, 35, 39, 40, 42, 46, 48, 49, 52, 54, 57, 58, 60, 63, 65, 69, 72, 76, 82, 84, 85, 87, 88, 90, 92, 93, 94, 95, 99, 102, 106, 108, 114, 115, 118, 121, 123, 124, 125, 129, 130, 132, 133, 138, 142, 147, 150, 155, 159, 160, 162, 166, 168]

cp's OEIS Frontend

A177029 Numbers that have exactly two different representations as polygonal numbers.

Table of values

List of values

n	a(n)
1	6
2	9
3	10
4	12
5	16
6	18
7	22
8	24
9	25
10	27
11	30
12	33
13	34
14	35
15	39
16	40
17	42
18	46
19	48
20	49
21	52
22	54
23	57
24	58
25	60
26	63
27	65
28	69
29	72
30	76
31	82
32	84
33	85
34	87
35	88
36	90
37	92
38	93
39	94
40	95
41	99
42	102
43	106
44	108
45	114
46	115
47	118
48	121
49	123
50	124
51	125
52	129
53	130
54	132
55	133
56	138
57	142
58	147
59	150
60	155
61	159
62	160
63	162
64	166
65	168

n	a(n)
1	6
2	9
3	10
4	12
5	16
6	18
7	22
8	24
9	25
10	27
11	30
12	33
13	34
14	35
15	39
16	40
17	42
18	46
19	48
20	49
21	52
22	54
23	57
24	58
25	60
26	63
27	65
28	69
29	72
30	76
31	82
32	84
33	85
34	87
35	88
36	90
37	92
38	93
39	94
40	95
41	99
42	102
43	106
44	108
45	114
46	115
47	118
48	121
49	123
50	124
51	125
52	129
53	130
54	132
55	133
56	138
57	142
58	147
59	150
60	155
61	159
62	160
63	162
64	166
65	168

n	a(n)
1	6
2	9
3	10
4	12
5	16
6	18
7	22
8	24
9	25
10	27
11	30
12	33
13	34
14	35
15	39
16	40
17	42
18	46
19	48
20	49
21	52
22	54
23	57
24	58
25	60
26	63
27	65
28	69
29	72
30	76
31	82
32	84
33	85
34	87
35	88
36	90
37	92
38	93
39	94
40	95
41	99
42	102
43	106
44	108
45	114
46	115
47	118
48	121
49	123
50	124
51	125
52	129
53	130
54	132
55	133
56	138
57	142
58	147
59	150
60	155
61	159
62	160
63	162
64	166
65	168