A075769 - cp's OEIS frontend

A075769 A Wallis pair (x,y) satisfies sigma(x^2) = sigma(y^2); sequence gives y's for indecomposable Wallis pairs with x < y (ordered by values of x).

n	a(n)
1	5
2	407
3	489
4	749
5	878
6	1451
7	1102
8	1208
9	1943
10	1528
11	1809
12	1605
13	2557
14	3097
15	3730
16	4829
17	6061
18	4880
19	6341
20	6172
21	7715
22	7067
23	10071
24	17441
25	11020
26	17531
27	14397
28	17441
29	14001
30	24161
31	24613
32	14288
33	14795
34	20396
35	25495
36	22577
37	19784
38	15836
39	19795
40	27713
41	30959

[5, 407, 489, 749, 878, 1451, 1102, 1208, 1943, 1528, 1809, 1605, 2557, 3097, 3730, 4829, 6061, 4880, 6341, 6172, 7715, 7067, 10071, 17441, 11020, 17531, 14397, 17441, 14001, 24161, 24613, 14288, 14795, 20396, 25495, 22577, 19784, 15836, 19795, 27713, 30959]

cp's OEIS Frontend

A075769 A Wallis pair (x,y) satisfies sigma(x^2) = sigma(y^2); sequence gives y's for indecomposable Wallis pairs with x < y (ordered by values of x).

Table of values

List of values