A229083 - cp's OEIS frontend

A229083 Numbers k such that the distance between the k-th triangular number and the nearest square is at most 1.

n	a(n)
1	1
2	2
3	4
4	5
5	8
6	15
7	25
8	32
9	49
10	90
11	148
12	189
13	288
14	527
15	865
16	1104
17	1681
18	3074
19	5044
20	6437
21	9800
22	17919
23	29401
24	37520
25	57121
26	104442
27	171364
28	218685
29	332928
30	608735
31	998785
32	1274592
33	1940449
34	3547970
35	5821348
36	7428869
37	11309768
38	20679087
39	33929305
40	43298624
41	65918161

[1, 2, 4, 5, 8, 15, 25, 32, 49, 90, 148, 189, 288, 527, 865, 1104, 1681, 3074, 5044, 6437, 9800, 17919, 29401, 37520, 57121, 104442, 171364, 218685, 332928, 608735, 998785, 1274592, 1940449, 3547970, 5821348, 7428869, 11309768, 20679087, 33929305, 43298624, 65918161]

cp's OEIS Frontend

A229083 Numbers k such that the distance between the k-th triangular number and the nearest square is at most 1.

Table of values

List of values