A232172 - cp's OEIS frontend

A232172 Partial sums of second arithmetic derivative of natural numbers.

n	a(n)
1	0
2	0
3	0
4	4
5	4
6	5
7	5
8	21
9	26
10	27
11	27
12	59
13	59
14	65
15	77
16	157
17	157
18	167
19	167
20	211
21	218
22	219
23	219
24	267
25	274
26	282
27	309
28	389
29	389
30	390
31	390
32	566
33	575
34	576
35	592
36	684
37	684
38	694
39	726
40	798
41	798
42	799
43	799
44	911
45	927
46	937
47	937
48	1177
49	1186
50	1225
51	1249
52	1341
53	1341
54	1449
55	1481

[0, 0, 0, 4, 4, 5, 5, 21, 26, 27, 27, 59, 59, 65, 77, 157, 157, 167, 167, 211, 218, 219, 219, 267, 274, 282, 309, 389, 389, 390, 390, 566, 575, 576, 592, 684, 684, 694, 726, 798, 798, 799, 799, 911, 927, 937, 937, 1177, 1186, 1225, 1249, 1341, 1341, 1449, 1481]

cp's OEIS Frontend

A232172 Partial sums of second arithmetic derivative of natural numbers.

Table of values

List of values