A180177 - cp's OEIS frontend

A180177 Triangle read by rows: T(n,k) is the number of compositions of n without 2's and having k parts; 1<=k<=n.

n	a(n)
1	1
2	0
3	1
4	1
5	0
6	1
7	1
8	2
9	0
10	1
11	1
12	2
13	3
14	0
15	1
16	1
17	3
18	3
19	4
20	0
21	1
22	1
23	4
24	6
25	4
26	5
27	0
28	1
29	1
30	5
31	9
32	10
33	5
34	6
35	0
36	1
37	1
38	6
39	13
40	16
41	15
42	6
43	7
44	0
45	1
46	1
47	7
48	18
49	26
50	25
51	21
52	7
53	8
54	0
55	1
56	1
57	8
58	24
59	40
60	45
61	36
62	28
63	8
64	9
65	0
66	1
67	1
68	9
69	31
70	59
71	75
72	71
73	49
74	36
75	9
76	10
77	0
78	1
79	1
80	10
81	39
82	84
83	120
84	126
85	105
86	64
87	45
88	10
89	11
90	0
91	1

[1, 0, 1, 1, 0, 1, 1, 2, 0, 1, 1, 2, 3, 0, 1, 1, 3, 3, 4, 0, 1, 1, 4, 6, 4, 5, 0, 1, 1, 5, 9, 10, 5, 6, 0, 1, 1, 6, 13, 16, 15, 6, 7, 0, 1, 1, 7, 18, 26, 25, 21, 7, 8, 0, 1, 1, 8, 24, 40, 45, 36, 28, 8, 9, 0, 1, 1, 9, 31, 59, 75, 71, 49, 36, 9, 10, 0, 1, 1, 10, 39, 84, 120, 126, 105, 64, 45, 10, 11, 0, 1]

cp's OEIS Frontend

A180177 Triangle read by rows: T(n,k) is the number of compositions of n without 2's and having k parts; 1<=k<=n.

Table of values

List of values

n	a(n)
1	1
2	0
3	1
4	1
5	0
6	1
7	1
8	2
9	0
10	1
11	1
12	2
13	3
14	0
15	1
16	1
17	3
18	3
19	4
20	0
21	1
22	1
23	4
24	6
25	4
26	5
27	0
28	1
29	1
30	5
31	9
32	10
33	5
34	6
35	0
36	1
37	1
38	6
39	13
40	16
41	15
42	6
43	7
44	0
45	1
46	1
47	7
48	18
49	26
50	25
51	21
52	7
53	8
54	0
55	1
56	1
57	8
58	24
59	40
60	45
61	36
62	28
63	8
64	9
65	0
66	1
67	1
68	9
69	31
70	59
71	75
72	71
73	49
74	36
75	9
76	10
77	0
78	1
79	1
80	10
81	39
82	84
83	120
84	126
85	105
86	64
87	45
88	10
89	11
90	0
91	1

n	a(n)
1	1
2	0
3	1
4	1
5	0
6	1
7	1
8	2
9	0
10	1
11	1
12	2
13	3
14	0
15	1
16	1
17	3
18	3
19	4
20	0
21	1
22	1
23	4
24	6
25	4
26	5
27	0
28	1
29	1
30	5
31	9
32	10
33	5
34	6
35	0
36	1
37	1
38	6
39	13
40	16
41	15
42	6
43	7
44	0
45	1
46	1
47	7
48	18
49	26
50	25
51	21
52	7
53	8
54	0
55	1
56	1
57	8
58	24
59	40
60	45
61	36
62	28
63	8
64	9
65	0
66	1
67	1
68	9
69	31
70	59
71	75
72	71
73	49
74	36
75	9
76	10
77	0
78	1
79	1
80	10
81	39
82	84
83	120
84	126
85	105
86	64
87	45
88	10
89	11
90	0
91	1

n	a(n)
1	1
2	0
3	1
4	1
5	0
6	1
7	1
8	2
9	0
10	1
11	1
12	2
13	3
14	0
15	1
16	1
17	3
18	3
19	4
20	0
21	1
22	1
23	4
24	6
25	4
26	5
27	0
28	1
29	1
30	5
31	9
32	10
33	5
34	6
35	0
36	1
37	1
38	6
39	13
40	16
41	15
42	6
43	7
44	0
45	1
46	1
47	7
48	18
49	26
50	25
51	21
52	7
53	8
54	0
55	1
56	1
57	8
58	24
59	40
60	45
61	36
62	28
63	8
64	9
65	0
66	1
67	1
68	9
69	31
70	59
71	75
72	71
73	49
74	36
75	9
76	10
77	0
78	1
79	1
80	10
81	39
82	84
83	120
84	126
85	105
86	64
87	45
88	10
89	11
90	0
91	1