A188898 - cp's OEIS frontend

A188898 The index of the least n-gonal number greater than 1 that is also square, or 0 if none exists.

n	a(n)
3	8
4	2
5	81
6	25
7	6
8	9
9	2
10	0
11	7
12	4
13	3
14	9
15	22
16	2
17	49
18	4
19	8
20	0
21	17
22	9
23	81
24	5
25	2
26	25
27	46
28	3
29	10
30	121
31	6
32	9
33	18
34	4
35	31
36	2
37	11
38	169
39	7
40	6
41	1681
42	49
43	8
44	4
45	4961
46	12
47	225
48	8
49	2
50	16
51	32
52	0
53	49
54	25
55	17
56	13
57	289
58	9
59	49
60	7
61	27
62	81
63	118
64	2
65	136161
66	196
67	14
68	4
69	10
70	841
71	1521

[8, 2, 81, 25, 6, 9, 2, 0, 7, 4, 3, 9, 22, 2, 49, 4, 8, 0, 17, 9, 81, 5, 2, 25, 46, 3, 10, 121, 6, 9, 18, 4, 31, 2, 11, 169, 7, 6, 1681, 49, 8, 4, 4961, 12, 225, 8, 2, 16, 32, 0, 49, 25, 17, 13, 289, 9, 49, 7, 27, 81, 118, 2, 136161, 196, 14, 4, 10, 841, 1521]

cp's OEIS Frontend

A188898 The index of the least n-gonal number greater than 1 that is also square, or 0 if none exists.

Table of values

List of values