A263754 - cp's OEIS frontend

A263754 Triangle read by rows: T(n,k) (n>=0, 1<=k<=n!) is the number of permutations pi of n such that there are k permutations <= pi in the left weak order.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	2
7	0
8	0
9	1
10	1
11	3
12	4
13	3
14	2
15	3
16	0
17	4
18	0
19	0
20	0
21	3
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0
32	0
33	1
34	1
35	4
36	6
37	7
38	6
39	9
40	4
41	10
42	4
43	8
44	2
45	8
46	0
47	4
48	8
49	2
50	0
51	4
52	0
53	9
54	0
55	0
56	0
57	2
58	4
59	0
60	0
61	0
62	0
63	7
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	6
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	4
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0

[1, 1, 1, 1, 1, 2, 2, 0, 0, 1, 1, 3, 4, 3, 2, 3, 0, 4, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 4, 6, 7, 6, 9, 4, 10, 4, 8, 2, 8, 0, 4, 8, 2, 0, 4, 0, 9, 0, 0, 0, 2, 4, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A263754 Triangle read by rows: T(n,k) (n>=0, 1<=k<=n!) is the number of permutations pi of n such that there are k permutations <= pi in the left weak order.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	2
7	0
8	0
9	1
10	1
11	3
12	4
13	3
14	2
15	3
16	0
17	4
18	0
19	0
20	0
21	3
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0
32	0
33	1
34	1
35	4
36	6
37	7
38	6
39	9
40	4
41	10
42	4
43	8
44	2
45	8
46	0
47	4
48	8
49	2
50	0
51	4
52	0
53	9
54	0
55	0
56	0
57	2
58	4
59	0
60	0
61	0
62	0
63	7
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	6
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	4
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	2
7	0
8	0
9	1
10	1
11	3
12	4
13	3
14	2
15	3
16	0
17	4
18	0
19	0
20	0
21	3
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0
32	0
33	1
34	1
35	4
36	6
37	7
38	6
39	9
40	4
41	10
42	4
43	8
44	2
45	8
46	0
47	4
48	8
49	2
50	0
51	4
52	0
53	9
54	0
55	0
56	0
57	2
58	4
59	0
60	0
61	0
62	0
63	7
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	6
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	4
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	2
7	0
8	0
9	1
10	1
11	3
12	4
13	3
14	2
15	3
16	0
17	4
18	0
19	0
20	0
21	3
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0
32	0
33	1
34	1
35	4
36	6
37	7
38	6
39	9
40	4
41	10
42	4
43	8
44	2
45	8
46	0
47	4
48	8
49	2
50	0
51	4
52	0
53	9
54	0
55	0
56	0
57	2
58	4
59	0
60	0
61	0
62	0
63	7
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	6
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	4
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0