A381622 - cp's OEIS frontend

A381622 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-under-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	3
9	4
10	2
11	1
12	5
13	3
14	2
15	4
16	1
17	3
18	5
19	2
20	6
21	4
22	1
23	7
24	5
25	2
26	4
27	6
28	3
29	1
30	7
31	4
32	2
33	8
34	6
35	3
36	5
37	1
38	4
39	6
40	2
41	8
42	5
43	3
44	9
45	7
46	1
47	10
48	8
49	2
50	5
51	7
52	3
53	9
54	6
55	4
56	1
57	7
58	5
59	2
60	11
61	9
62	3
63	6
64	8
65	4
66	10
67	1
68	5
69	11
70	2
71	8
72	6
73	3
74	12
75	10
76	4
77	7
78	9
79	1
80	8
81	10
82	2
83	6
84	12
85	3
86	9
87	7
88	4
89	13
90	11
91	5

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

cp's OEIS Frontend

A381622 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-under-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	3
9	4
10	2
11	1
12	5
13	3
14	2
15	4
16	1
17	3
18	5
19	2
20	6
21	4
22	1
23	7
24	5
25	2
26	4
27	6
28	3
29	1
30	7
31	4
32	2
33	8
34	6
35	3
36	5
37	1
38	4
39	6
40	2
41	8
42	5
43	3
44	9
45	7
46	1
47	10
48	8
49	2
50	5
51	7
52	3
53	9
54	6
55	4
56	1
57	7
58	5
59	2
60	11
61	9
62	3
63	6
64	8
65	4
66	10
67	1
68	5
69	11
70	2
71	8
72	6
73	3
74	12
75	10
76	4
77	7
78	9
79	1
80	8
81	10
82	2
83	6
84	12
85	3
86	9
87	7
88	4
89	13
90	11
91	5

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

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