A328769 - cp's OEIS frontend

A328769 The second primorial based variant of arithmetic derivative: a(p) = A034386(p) for p prime, a(uv) = a(u)v + u*a(v), with a(0) = a(1) = 0.

n	a(n)
0	0
1	0
2	2
3	6
4	8
5	30
6	18
7	210
8	24
9	36
10	70
11	2310
12	48
13	30030
14	434
15	120
16	64
17	510510
18	90
19	9699690
20	160
21	672
22	4642
23	223092870
24	120
25	300
26	60086
27	162
28	896
29	6469693230
30	270
31	200560490130
32	160
33	6996
34	1021054
35	1260
36	216
37	7420738134810
38	19399418
39	90168
40	360
41	304250263527210
42	1386
43	13082761331670030
44	9328
45	450
46	446185786
47	614889782588491410
48	288
49	2940
50	650
51	1531632

[0, 0, 2, 6, 8, 30, 18, 210, 24, 36, 70, 2310, 48, 30030, 434, 120, 64, 510510, 90, 9699690, 160, 672, 4642, 223092870, 120, 300, 60086, 162, 896, 6469693230, 270, 200560490130, 160, 6996, 1021054, 1260, 216, 7420738134810, 19399418, 90168, 360, 304250263527210, 1386, 13082761331670030, 9328, 450, 446185786, 614889782588491410, 288, 2940, 650, 1531632]

cp's OEIS Frontend

A328769 The second primorial based variant of arithmetic derivative: a(p) = A034386(p) for p prime, a(uv) = a(u)v + u*a(v), with a(0) = a(1) = 0.

Table of values

List of values

cp's OEIS Frontend

A328769 The second primorial based variant of arithmetic derivative: a(p) = A034386(p) for p prime, a(u*v) = a(u)*v + u*a(v), with a(0) = a(1) = 0.

Table of values

List of values

A328769 The second primorial based variant of arithmetic derivative: a(p) = A034386(p) for p prime, a(uv) = a(u)v + u*a(v), with a(0) = a(1) = 0.