A261693 - cp's OEIS frontend

A261693 Irregular triangle read by rows in which row n lists the positive odd numbers in decreasing order starting with 2^n - 1. T(0, 1) = 0 and T(n, k) for n >= 1, 1 <= k <= 2^(n-1).

n	a(n)
0	0
1	1
2	3
3	1
4	7
5	5
6	3
7	1
8	15
9	13
10	11
11	9
12	7
13	5
14	3
15	1
16	31
17	29
18	27
19	25
20	23
21	21
22	19
23	17
24	15
25	13
26	11
27	9
28	7
29	5
30	3
31	1
32	63
33	61
34	59
35	57
36	55
37	53
38	51
39	49
40	47
41	45
42	43
43	41
44	39
45	37
46	35
47	33
48	31
49	29
50	27
51	25
52	23
53	21
54	19
55	17
56	15
57	13
58	11
59	9
60	7
61	5
62	3
63	1
64	127
65	125
66	123
67	121
68	119
69	117
70	115
71	113
72	111
73	109
74	107
75	105
76	103
77	101
78	99
79	97
80	95
81	93

[0, 1, 3, 1, 7, 5, 3, 1, 15, 13, 11, 9, 7, 5, 3, 1, 31, 29, 27, 25, 23, 21, 19, 17, 15, 13, 11, 9, 7, 5, 3, 1, 63, 61, 59, 57, 55, 53, 51, 49, 47, 45, 43, 41, 39, 37, 35, 33, 31, 29, 27, 25, 23, 21, 19, 17, 15, 13, 11, 9, 7, 5, 3, 1, 127, 125, 123, 121, 119, 117, 115, 113, 111, 109, 107, 105, 103, 101, 99, 97, 95, 93]

cp's OEIS Frontend

A261693 Irregular triangle read by rows in which row n lists the positive odd numbers in decreasing order starting with 2^n - 1. T(0, 1) = 0 and T(n, k) for n >= 1, 1 <= k <= 2^(n-1).

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	1
4	7
5	5
6	3
7	1
8	15
9	13
10	11
11	9
12	7
13	5
14	3
15	1
16	31
17	29
18	27
19	25
20	23
21	21
22	19
23	17
24	15
25	13
26	11
27	9
28	7
29	5
30	3
31	1
32	63
33	61
34	59
35	57
36	55
37	53
38	51
39	49
40	47
41	45
42	43
43	41
44	39
45	37
46	35
47	33
48	31
49	29
50	27
51	25
52	23
53	21
54	19
55	17
56	15
57	13
58	11
59	9
60	7
61	5
62	3
63	1
64	127
65	125
66	123
67	121
68	119
69	117
70	115
71	113
72	111
73	109
74	107
75	105
76	103
77	101
78	99
79	97
80	95
81	93

n	a(n)
0	0
1	1
2	3
3	1
4	7
5	5
6	3
7	1
8	15
9	13
10	11
11	9
12	7
13	5
14	3
15	1
16	31
17	29
18	27
19	25
20	23
21	21
22	19
23	17
24	15
25	13
26	11
27	9
28	7
29	5
30	3
31	1
32	63
33	61
34	59
35	57
36	55
37	53
38	51
39	49
40	47
41	45
42	43
43	41
44	39
45	37
46	35
47	33
48	31
49	29
50	27
51	25
52	23
53	21
54	19
55	17
56	15
57	13
58	11
59	9
60	7
61	5
62	3
63	1
64	127
65	125
66	123
67	121
68	119
69	117
70	115
71	113
72	111
73	109
74	107
75	105
76	103
77	101
78	99
79	97
80	95
81	93

n	a(n)
0	0
1	1
2	3
3	1
4	7
5	5
6	3
7	1
8	15
9	13
10	11
11	9
12	7
13	5
14	3
15	1
16	31
17	29
18	27
19	25
20	23
21	21
22	19
23	17
24	15
25	13
26	11
27	9
28	7
29	5
30	3
31	1
32	63
33	61
34	59
35	57
36	55
37	53
38	51
39	49
40	47
41	45
42	43
43	41
44	39
45	37
46	35
47	33
48	31
49	29
50	27
51	25
52	23
53	21
54	19
55	17
56	15
57	13
58	11
59	9
60	7
61	5
62	3
63	1
64	127
65	125
66	123
67	121
68	119
69	117
70	115
71	113
72	111
73	109
74	107
75	105
76	103
77	101
78	99
79	97
80	95
81	93