A383847 - cp's OEIS frontend

A383847 Triangle T(n,k) read by rows, where row n is a permutation of the numbers 1 through n, such that if a deck of n cards is prepared in this order, and down-down-under dealing is used, then the resulting cards will be dealt in increasing order.

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

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

cp's OEIS Frontend

A383847 Triangle T(n,k) read by rows, where row n is a permutation of the numbers 1 through n, such that if a deck of n cards is prepared in this order, and down-down-under dealing is used, then the resulting cards will be dealt in increasing order.

Table of values

List of values

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

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

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