A344949 - cp's OEIS frontend

A344949 a(n) is the smallest square s > 0 such that s*(2n+1) is a triangular number.

n	a(n)
0	1
1	1
2	9
3	4
4	4
5	441
6	25
7	1
8	9
9	9
10	1
11	3218436
12	49
13	1089
14	1656369
15	16
16	16
17	225
18	46225
19	9
20	81
21	314721
22	1
23	12217323024
24	25
25	25
26	2427192623025
27	1
28	2304
29	199572129
30	121
31	400
32	81225
33	39727809
34	4
35	36
36	36
37	4
38	736164
39	94864
40	592900
41	4357032433168041
42	169
43	3025
44	3600
45	1

[1, 1, 9, 4, 4, 441, 25, 1, 9, 9, 1, 3218436, 49, 1089, 1656369, 16, 16, 225, 46225, 9, 81, 314721, 1, 12217323024, 25, 25, 2427192623025, 1, 2304, 199572129, 121, 400, 81225, 39727809, 4, 36, 36, 4, 736164, 94864, 592900, 4357032433168041, 169, 3025, 3600, 1]

cp's OEIS Frontend

A344949 a(n) is the smallest square s > 0 such that s*(2n+1) is a triangular number.

Table of values

List of values