A131271 - cp's OEIS frontend

A131271 Triangular array T(n,k), n>=0, k=1..2^n, read by rows in bracketed pairs such that highest ranked element is bracketed with lowest ranked.

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

[1, 1, 2, 1, 4, 2, 3, 1, 8, 4, 5, 2, 7, 3, 6, 1, 16, 8, 9, 4, 13, 5, 12, 2, 15, 7, 10, 3, 14, 6, 11, 1, 32, 16, 17, 8, 25, 9, 24, 4, 29, 13, 20, 5, 28, 12, 21, 2, 31, 15, 18, 7, 26, 10, 23, 3, 30, 14, 19, 6, 27, 11, 22, 1, 64, 32, 33, 16, 49, 17, 48, 8, 57]

cp's OEIS Frontend

A131271 Triangular array T(n,k), n>=0, k=1..2^n, read by rows in bracketed pairs such that highest ranked element is bracketed with lowest ranked.

Table of values

List of values

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

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

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