A331105 - cp's OEIS frontend

A331105 T(n,k) = -k*(k+1)/2 mod 2^n; triangle T(n,k), n>=0, 0<=k<=2^n-1, read by rows.

n	a(n)
0	0
1	0
2	1
3	0
4	3
5	1
6	2
7	0
8	7
9	5
10	2
11	6
12	1
13	3
14	4
15	0
16	15
17	13
18	10
19	6
20	1
21	11
22	4
23	12
24	3
25	9
26	14
27	2
28	5
29	7
30	8
31	0
32	31
33	29
34	26
35	22
36	17
37	11
38	4
39	28
40	19
41	9
42	30
43	18
44	5
45	23
46	8
47	24
48	7
49	21
50	2
51	14
52	25
53	3
54	12
55	20
56	27
57	1
58	6
59	10
60	13
61	15
62	16
63	0
64	63
65	61
66	58
67	54
68	49
69	43
70	36
71	28
72	19
73	9

[0, 0, 1, 0, 3, 1, 2, 0, 7, 5, 2, 6, 1, 3, 4, 0, 15, 13, 10, 6, 1, 11, 4, 12, 3, 9, 14, 2, 5, 7, 8, 0, 31, 29, 26, 22, 17, 11, 4, 28, 19, 9, 30, 18, 5, 23, 8, 24, 7, 21, 2, 14, 25, 3, 12, 20, 27, 1, 6, 10, 13, 15, 16, 0, 63, 61, 58, 54, 49, 43, 36, 28, 19, 9]

cp's OEIS Frontend

A331105 T(n,k) = -k*(k+1)/2 mod 2^n; triangle T(n,k), n>=0, 0<=k<=2^n-1, read by rows.

Table of values

List of values

n	a(n)
0	0
1	0
2	1
3	0
4	3
5	1
6	2
7	0
8	7
9	5
10	2
11	6
12	1
13	3
14	4
15	0
16	15
17	13
18	10
19	6
20	1
21	11
22	4
23	12
24	3
25	9
26	14
27	2
28	5
29	7
30	8
31	0
32	31
33	29
34	26
35	22
36	17
37	11
38	4
39	28
40	19
41	9
42	30
43	18
44	5
45	23
46	8
47	24
48	7
49	21
50	2
51	14
52	25
53	3
54	12
55	20
56	27
57	1
58	6
59	10
60	13
61	15
62	16
63	0
64	63
65	61
66	58
67	54
68	49
69	43
70	36
71	28
72	19
73	9

n	a(n)
0	0
1	0
2	1
3	0
4	3
5	1
6	2
7	0
8	7
9	5
10	2
11	6
12	1
13	3
14	4
15	0
16	15
17	13
18	10
19	6
20	1
21	11
22	4
23	12
24	3
25	9
26	14
27	2
28	5
29	7
30	8
31	0
32	31
33	29
34	26
35	22
36	17
37	11
38	4
39	28
40	19
41	9
42	30
43	18
44	5
45	23
46	8
47	24
48	7
49	21
50	2
51	14
52	25
53	3
54	12
55	20
56	27
57	1
58	6
59	10
60	13
61	15
62	16
63	0
64	63
65	61
66	58
67	54
68	49
69	43
70	36
71	28
72	19
73	9

n	a(n)
0	0
1	0
2	1
3	0
4	3
5	1
6	2
7	0
8	7
9	5
10	2
11	6
12	1
13	3
14	4
15	0
16	15
17	13
18	10
19	6
20	1
21	11
22	4
23	12
24	3
25	9
26	14
27	2
28	5
29	7
30	8
31	0
32	31
33	29
34	26
35	22
36	17
37	11
38	4
39	28
40	19
41	9
42	30
43	18
44	5
45	23
46	8
47	24
48	7
49	21
50	2
51	14
52	25
53	3
54	12
55	20
56	27
57	1
58	6
59	10
60	13
61	15
62	16
63	0
64	63
65	61
66	58
67	54
68	49
69	43
70	36
71	28
72	19
73	9