A352990 - cp's OEIS frontend

A352990 Numbers k such that the k-th triangular number == 1 mod the integer log of k.

n	a(n)
1	2
2	6
3	12
4	21
5	33
6	45
7	52
8	63
9	136
10	162
11	201
12	205
13	208
14	225
15	245
16	253
17	301
18	304
19	344
20	441
21	494
22	531
23	550
24	637
25	697
26	720
27	742
28	806
29	901
30	910
31	918
32	1078
33	1233
34	1242
35	1274
36	1333
37	1376
38	1540
39	1566
40	1573
41	1625
42	1680
43	1695
44	1792
45	1863
46	1909
47	2025
48	2041
49	2107
50	2295
51	2466
52	2497
53	2774
54	2896
55	2926
56	2965

[2, 6, 12, 21, 33, 45, 52, 63, 136, 162, 201, 205, 208, 225, 245, 253, 301, 304, 344, 441, 494, 531, 550, 637, 697, 720, 742, 806, 901, 910, 918, 1078, 1233, 1242, 1274, 1333, 1376, 1540, 1566, 1573, 1625, 1680, 1695, 1792, 1863, 1909, 2025, 2041, 2107, 2295, 2466, 2497, 2774, 2896, 2926, 2965]

cp's OEIS Frontend

A352990 Numbers k such that the k-th triangular number == 1 mod the integer log of k.

Table of values

List of values