A368579 - cp's OEIS frontend

A368579 Triangle read by rows. T(n, k) is the number of compositions of n where the first part k is the largest part and the last part is not 1.

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

[1, -1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 2, 2, 1, 0, 1, 0, 0, 3, 3, 2, 1, 0, 1, 0, 0, 5, 6, 4, 2, 1, 0, 1, 0, 0, 8, 11, 7, 4, 2, 1, 0, 1, 0, 0, 13, 20, 14, 8, 4, 2, 1, 0, 1, 0, 0, 21, 37, 27, 15, 8, 4, 2, 1, 0, 1]

cp's OEIS Frontend

A368579 Triangle read by rows. T(n, k) is the number of compositions of n where the first part k is the largest part and the last part is not 1.

Table of values

List of values

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

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

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