A188893 - cp's OEIS frontend

A188893 The index of the least triangular number greater than 1 that is also an n-gonal number, or 0 if none exists.

n	a(n)
3	2
4	8
5	20
6	3
7	10
8	6
9	25
10	4
11	0
12	14
13	8
14	50
15	5
16	9
17	21
18	0
19	43
20	23
21	6
22	154
23	11
24	16
25	26
26	56
27	12
28	7
29	49
30	34
31	40
32	342
33	19
34	25
35	1634
36	8
37	115
38	0
39	33
40	89
41	15
42	47
43	54
44	638
45	9
46	36
47	117
48	30
49	99
50	204
51	38
52	17
53	146
54	133
55	10
56	62
57	70
58	18
59	41
60	49
61	34
62	4806
63	105
64	161
65	329
66	11
67	439
68	223
69	28
70	5974
71	20
72	79

[2, 8, 20, 3, 10, 6, 25, 4, 0, 14, 8, 50, 5, 9, 21, 0, 43, 23, 6, 154, 11, 16, 26, 56, 12, 7, 49, 34, 40, 342, 19, 25, 1634, 8, 115, 0, 33, 89, 15, 47, 54, 638, 9, 36, 117, 30, 99, 204, 38, 17, 146, 133, 10, 62, 70, 18, 41, 49, 34, 4806, 105, 161, 329, 11, 439, 223, 28, 5974, 20, 79]

cp's OEIS Frontend

A188893 The index of the least triangular number greater than 1 that is also an n-gonal number, or 0 if none exists.

Table of values

List of values