A345139 - cp's OEIS frontend

A345139 a(1) = 1; a(n) = a(n-1) + Sum_{d|n, d < n} a(d).

n	a(n)
1	1
2	2
3	3
4	6
5	7
6	13
7	14
8	23
9	27
10	37
11	38
12	63
13	64
14	81
15	92
16	124
17	125
18	171
19	172
20	225
21	243
22	284
23	285
24	396
25	404
26	471
27	502
28	606
29	607
30	762
31	763
32	919
33	961
34	1089
35	1111
36	1397
37	1398
38	1573
39	1641
40	1942
41	1943
42	2300
43	2301
44	2632
45	2762
46	3050
47	3051
48	3682
49	3697
50	4148
51	4277
52	4821
53	4822
54	5541
55	5587

[1, 2, 3, 6, 7, 13, 14, 23, 27, 37, 38, 63, 64, 81, 92, 124, 125, 171, 172, 225, 243, 284, 285, 396, 404, 471, 502, 606, 607, 762, 763, 919, 961, 1089, 1111, 1397, 1398, 1573, 1641, 1942, 1943, 2300, 2301, 2632, 2762, 3050, 3051, 3682, 3697, 4148, 4277, 4821, 4822, 5541, 5587]

cp's OEIS Frontend

A345139 a(1) = 1; a(n) = a(n-1) + Sum_{d|n, d < n} a(d).

Table of values

List of values