A343995 - cp's OEIS frontend

A343995 Smallest m > 0 such that the triangular number m*(m+1)/2 is divisible by 2^n-1.

n	a(n)
1	1
2	2
3	6
4	5
5	30
6	27
7	126
8	50
9	146
10	186
11	712
12	90
13	8190
14	2666
15	3472
16	6425
17	131070
18	37449
19	524286
20	95325
21	547624
22	700074
23	2677214
24	184365
25	540299
26	11180714
27	12870192
28	8956040
29	66682968
30	349866
31	2147483646
32	210570380
33	407645720
34	2863377066
35	483939976
36	509033160
37	56701272284
38	45812722346

[1, 2, 6, 5, 30, 27, 126, 50, 146, 186, 712, 90, 8190, 2666, 3472, 6425, 131070, 37449, 524286, 95325, 547624, 700074, 2677214, 184365, 540299, 11180714, 12870192, 8956040, 66682968, 349866, 2147483646, 210570380, 407645720, 2863377066, 483939976, 509033160, 56701272284, 45812722346]

cp's OEIS Frontend

A343995 Smallest m > 0 such that the triangular number m*(m+1)/2 is divisible by 2^n-1.

Table of values

List of values