A117136 - cp's OEIS frontend

A117136 Triangle read by rows: row n always begins with 1. Later terms in row n are obtained by successively subtracting or adding the numbers n, n+1, n+2, until reaching 1 again. The rule is that you subtract if the result is positive, otherwise you add.

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	1
6	1
7	3
8	6
9	2
10	7
11	1
12	1
13	4
14	8
15	3
16	9
17	2
18	10
19	1
20	1
21	5
22	10
23	4
24	11
25	3
26	12
27	2
28	13
29	1
30	1
31	6
32	12
33	5
34	13
35	4
36	14
37	3
38	15
39	2
40	16
41	1
42	1
43	7
44	14
45	6
46	15
47	5
48	16
49	4
50	17
51	3
52	18
53	2
54	19
55	1

[1, 1, 1, 2, 4, 1, 1, 3, 6, 2, 7, 1, 1, 4, 8, 3, 9, 2, 10, 1, 1, 5, 10, 4, 11, 3, 12, 2, 13, 1, 1, 6, 12, 5, 13, 4, 14, 3, 15, 2, 16, 1, 1, 7, 14, 6, 15, 5, 16, 4, 17, 3, 18, 2, 19, 1]

cp's OEIS Frontend

A117136 Triangle read by rows: row n always begins with 1. Later terms in row n are obtained by successively subtracting or adding the numbers n, n+1, n+2, until reaching 1 again. The rule is that you subtract if the result is positive, otherwise you add.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	1
6	1
7	3
8	6
9	2
10	7
11	1
12	1
13	4
14	8
15	3
16	9
17	2
18	10
19	1
20	1
21	5
22	10
23	4
24	11
25	3
26	12
27	2
28	13
29	1
30	1
31	6
32	12
33	5
34	13
35	4
36	14
37	3
38	15
39	2
40	16
41	1
42	1
43	7
44	14
45	6
46	15
47	5
48	16
49	4
50	17
51	3
52	18
53	2
54	19
55	1

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	1
6	1
7	3
8	6
9	2
10	7
11	1
12	1
13	4
14	8
15	3
16	9
17	2
18	10
19	1
20	1
21	5
22	10
23	4
24	11
25	3
26	12
27	2
28	13
29	1
30	1
31	6
32	12
33	5
34	13
35	4
36	14
37	3
38	15
39	2
40	16
41	1
42	1
43	7
44	14
45	6
46	15
47	5
48	16
49	4
50	17
51	3
52	18
53	2
54	19
55	1

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	1
6	1
7	3
8	6
9	2
10	7
11	1
12	1
13	4
14	8
15	3
16	9
17	2
18	10
19	1
20	1
21	5
22	10
23	4
24	11
25	3
26	12
27	2
28	13
29	1
30	1
31	6
32	12
33	5
34	13
35	4
36	14
37	3
38	15
39	2
40	16
41	1
42	1
43	7
44	14
45	6
46	15
47	5
48	16
49	4
50	17
51	3
52	18
53	2
54	19
55	1