A203616 - cp's OEIS frontend

A203616 Numbers k such that the reversal of sigma(k) equals the sum of the reversals of the anti-divisors of k, where sigma(k) is the sum of the anti-divisors of k.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	9
9	20
10	63
11	96
12	97
13	317
14	596
15	1473
16	3934
17	26777
18	27684
19	50867
20	51767
21	62417
22	322001
23	393216
24	1308775
25	1420260
26	1851474
27	2651867
28	2659067
29	3040656
30	3227267
31	3289277
32	3376007
33	4626917
34	4639067
35	5378507
36	6054521
37	6227027
38	6239839
39	6439067
40	6581929

[1, 2, 3, 4, 5, 6, 8, 9, 20, 63, 96, 97, 317, 596, 1473, 3934, 26777, 27684, 50867, 51767, 62417, 322001, 393216, 1308775, 1420260, 1851474, 2651867, 2659067, 3040656, 3227267, 3289277, 3376007, 4626917, 4639067, 5378507, 6054521, 6227027, 6239839, 6439067, 6581929]

cp's OEIS Frontend

A203616 Numbers k such that the reversal of sigma(k) equals the sum of the reversals of the anti-divisors of k, where sigma(k) is the sum of the anti-divisors of k.

Table of values

List of values

cp's OEIS Frontend

A203616 Numbers k such that the reversal of sigma*(k) equals the sum of the reversals of the anti-divisors of k, where sigma*(k) is the sum of the anti-divisors of k.

Table of values

List of values

A203616 Numbers k such that the reversal of sigma(k) equals the sum of the reversals of the anti-divisors of k, where sigma(k) is the sum of the anti-divisors of k.