A181633 - cp's OEIS frontend

A181633 Irregular triangle read by rows, where row n contains the pairs [q,q'] of all compositions n=q+q' with q,q'>0 and q == q' (mod 3).

n	a(n)
2	1
3	1
4	2
5	2
6	4
7	1
8	1
9	4
10	3
11	3
12	5
13	2
14	2
15	5
16	7
17	1
18	4
19	4
20	1
21	7
22	6
23	3
24	3
25	6
26	8
27	2
28	5
29	5
30	2
31	8
32	10
33	1
34	7
35	4
36	4
37	7
38	1
39	10
40	9
41	3
42	6
43	6
44	3
45	9
46	11
47	2
48	8
49	5
50	5
51	8
52	2
53	11
54	13
55	1
56	10
57	4
58	7
59	7
60	4
61	10
62	1
63	13
64	12
65	3
66	9
67	6
68	6
69	9
70	3
71	12
72	14
73	2
74	11
75	5
76	8
77	8
78	5
79	11
80	2
81	14
82	16
83	1
84	13
85	4
86	10
87	7
88	7
89	10
90	4
91	13
92	1
93	16
94	15
95	3
96	12
97	6
98	9
99	9
100	6
101	12
102	3
103	15

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

cp's OEIS Frontend

A181633 Irregular triangle read by rows, where row n contains the pairs [q,q'] of all compositions n=q+q' with q,q'>0 and q == q' (mod 3).

Table of values

List of values

n	a(n)
2	1
3	1
4	2
5	2
6	4
7	1
8	1
9	4
10	3
11	3
12	5
13	2
14	2
15	5
16	7
17	1
18	4
19	4
20	1
21	7
22	6
23	3
24	3
25	6
26	8
27	2
28	5
29	5
30	2
31	8
32	10
33	1
34	7
35	4
36	4
37	7
38	1
39	10
40	9
41	3
42	6
43	6
44	3
45	9
46	11
47	2
48	8
49	5
50	5
51	8
52	2
53	11
54	13
55	1
56	10
57	4
58	7
59	7
60	4
61	10
62	1
63	13
64	12
65	3
66	9
67	6
68	6
69	9
70	3
71	12
72	14
73	2
74	11
75	5
76	8
77	8
78	5
79	11
80	2
81	14
82	16
83	1
84	13
85	4
86	10
87	7
88	7
89	10
90	4
91	13
92	1
93	16
94	15
95	3
96	12
97	6
98	9
99	9
100	6
101	12
102	3
103	15

n	a(n)
2	1
3	1
4	2
5	2
6	4
7	1
8	1
9	4
10	3
11	3
12	5
13	2
14	2
15	5
16	7
17	1
18	4
19	4
20	1
21	7
22	6
23	3
24	3
25	6
26	8
27	2
28	5
29	5
30	2
31	8
32	10
33	1
34	7
35	4
36	4
37	7
38	1
39	10
40	9
41	3
42	6
43	6
44	3
45	9
46	11
47	2
48	8
49	5
50	5
51	8
52	2
53	11
54	13
55	1
56	10
57	4
58	7
59	7
60	4
61	10
62	1
63	13
64	12
65	3
66	9
67	6
68	6
69	9
70	3
71	12
72	14
73	2
74	11
75	5
76	8
77	8
78	5
79	11
80	2
81	14
82	16
83	1
84	13
85	4
86	10
87	7
88	7
89	10
90	4
91	13
92	1
93	16
94	15
95	3
96	12
97	6
98	9
99	9
100	6
101	12
102	3
103	15

n	a(n)
2	1
3	1
4	2
5	2
6	4
7	1
8	1
9	4
10	3
11	3
12	5
13	2
14	2
15	5
16	7
17	1
18	4
19	4
20	1
21	7
22	6
23	3
24	3
25	6
26	8
27	2
28	5
29	5
30	2
31	8
32	10
33	1
34	7
35	4
36	4
37	7
38	1
39	10
40	9
41	3
42	6
43	6
44	3
45	9
46	11
47	2
48	8
49	5
50	5
51	8
52	2
53	11
54	13
55	1
56	10
57	4
58	7
59	7
60	4
61	10
62	1
63	13
64	12
65	3
66	9
67	6
68	6
69	9
70	3
71	12
72	14
73	2
74	11
75	5
76	8
77	8
78	5
79	11
80	2
81	14
82	16
83	1
84	13
85	4
86	10
87	7
88	7
89	10
90	4
91	13
92	1
93	16
94	15
95	3
96	12
97	6
98	9
99	9
100	6
101	12
102	3
103	15