A370126 - cp's OEIS frontend

A370126 Numbers k for which k’ = x’*y’, where k = x + y with x and y composite, and k’, x’, y’ are the arithmetic derivatives of k, x, y.

n	a(n)
1	48
2	160
3	208
4	212
5	236
6	252
7	268
8	496
9	612
10	752
11	1040
12	1172
13	1376
14	1476
15	1568
16	1584
17	1692
18	1728
19	2016
20	2192
21	2736
22	3616
23	3627
24	3632
25	3760
26	3932
27	4048
28	4508
29	4572
30	5264
31	5392
32	5900
33	6224
34	6336
35	6640
36	6652
37	6948
38	7376
39	7648
40	8244
41	8928
42	9072
43	9392
44	9712
45	10648
46	10736
47	10960
48	12500
49	12544
50	12592
51	12960
52	13284
53	16452

[48, 160, 208, 212, 236, 252, 268, 496, 612, 752, 1040, 1172, 1376, 1476, 1568, 1584, 1692, 1728, 2016, 2192, 2736, 3616, 3627, 3632, 3760, 3932, 4048, 4508, 4572, 5264, 5392, 5900, 6224, 6336, 6640, 6652, 6948, 7376, 7648, 8244, 8928, 9072, 9392, 9712, 10648, 10736, 10960, 12500, 12544, 12592, 12960, 13284, 16452]

cp's OEIS Frontend

A370126 Numbers k for which k’ = x’*y’, where k = x + y with x and y composite, and k’, x’, y’ are the arithmetic derivatives of k, x, y.

Table of values

List of values