A232533 - cp's OEIS frontend

A232533 a(n) = Sum_{i=1...n} Sum_{j=1..i} lcm(i,j)/i.

n	a(n)
1	1
2	3
3	7
4	13
5	24
6	35
7	57
8	79
9	110
10	142
11	198
12	237
13	316
14	381
15	455
16	541
17	678
18	770
19	942
20	1058
21	1209
22	1376
23	1630
24	1781
25	2042
26	2278
27	2552
28	2789
29	3196
30	3417
31	3883
32	4225
33	4614
34	5024
35	5476
36	5812
37	6479
38	6994
39	7544
40	7996
41	8817
42	9269
43	10173
44	10784
45	11425
46	12186
47	13268

[1, 3, 7, 13, 24, 35, 57, 79, 110, 142, 198, 237, 316, 381, 455, 541, 678, 770, 942, 1058, 1209, 1376, 1630, 1781, 2042, 2278, 2552, 2789, 3196, 3417, 3883, 4225, 4614, 5024, 5476, 5812, 6479, 6994, 7544, 7996, 8817, 9269, 10173, 10784, 11425, 12186, 13268]

cp's OEIS Frontend

A232533 a(n) = Sum_{i=1...n} Sum_{j=1..i} lcm(i,j)/i.

Table of values

List of values