A378505 - cp's OEIS frontend

A378505 a(0) = 0, a(n) = 0 where a(n-1) is nonzero and divisible by n. Otherwise a(n) = n + a(n-1).

n	a(n)
0	0
1	1
2	3
3	0
4	4
5	9
6	15
7	22
8	30
9	39
10	49
11	60
12	0
13	13
14	27
15	42
16	58
17	75
18	93
19	112
20	132
21	153
22	175
23	198
24	222
25	247
26	273
27	300
28	328
29	357
30	387
31	418
32	450
33	483
34	517
35	552
36	588
37	625
38	663
39	0
40	40
41	81
42	123
43	166
44	210
45	255
46	301
47	348
48	396
49	445
50	495
51	546
52	598
53	651
54	705
55	760
56	816

[0, 1, 3, 0, 4, 9, 15, 22, 30, 39, 49, 60, 0, 13, 27, 42, 58, 75, 93, 112, 132, 153, 175, 198, 222, 247, 273, 300, 328, 357, 387, 418, 450, 483, 517, 552, 588, 625, 663, 0, 40, 81, 123, 166, 210, 255, 301, 348, 396, 445, 495, 546, 598, 651, 705, 760, 816]

cp's OEIS Frontend

A378505 a(0) = 0, a(n) = 0 where a(n-1) is nonzero and divisible by n. Otherwise a(n) = n + a(n-1).

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	0
4	4
5	9
6	15
7	22
8	30
9	39
10	49
11	60
12	0
13	13
14	27
15	42
16	58
17	75
18	93
19	112
20	132
21	153
22	175
23	198
24	222
25	247
26	273
27	300
28	328
29	357
30	387
31	418
32	450
33	483
34	517
35	552
36	588
37	625
38	663
39	0
40	40
41	81
42	123
43	166
44	210
45	255
46	301
47	348
48	396
49	445
50	495
51	546
52	598
53	651
54	705
55	760
56	816

n	a(n)
0	0
1	1
2	3
3	0
4	4
5	9
6	15
7	22
8	30
9	39
10	49
11	60
12	0
13	13
14	27
15	42
16	58
17	75
18	93
19	112
20	132
21	153
22	175
23	198
24	222
25	247
26	273
27	300
28	328
29	357
30	387
31	418
32	450
33	483
34	517
35	552
36	588
37	625
38	663
39	0
40	40
41	81
42	123
43	166
44	210
45	255
46	301
47	348
48	396
49	445
50	495
51	546
52	598
53	651
54	705
55	760
56	816

n	a(n)
0	0
1	1
2	3
3	0
4	4
5	9
6	15
7	22
8	30
9	39
10	49
11	60
12	0
13	13
14	27
15	42
16	58
17	75
18	93
19	112
20	132
21	153
22	175
23	198
24	222
25	247
26	273
27	300
28	328
29	357
30	387
31	418
32	450
33	483
34	517
35	552
36	588
37	625
38	663
39	0
40	40
41	81
42	123
43	166
44	210
45	255
46	301
47	348
48	396
49	445
50	495
51	546
52	598
53	651
54	705
55	760
56	816