A143315 - cp's OEIS frontend

A143315 Triangle read by rows: T(n, k) = 2*A126988(n, k) - signum(A126988(n, k)).

n	a(n)
1	1
2	3
3	1
4	5
5	0
6	1
7	7
8	3
9	0
10	1
11	9
12	0
13	0
14	0
15	1
16	11
17	5
18	3
19	0
20	0
21	1
22	13
23	0
24	0
25	0
26	0
27	0
28	1
29	15
30	7
31	0
32	3
33	0
34	0
35	0
36	1
37	17
38	0
39	5
40	0
41	0
42	0
43	0
44	0
45	1
46	19
47	9
48	0
49	0
50	3
51	0
52	0
53	0
54	0
55	1
56	21
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	1
67	23
68	11
69	7
70	5
71	0
72	3
73	0
74	0
75	0
76	0
77	0
78	1
79	25
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	1

[1, 3, 1, 5, 0, 1, 7, 3, 0, 1, 9, 0, 0, 0, 1, 11, 5, 3, 0, 0, 1, 13, 0, 0, 0, 0, 0, 1, 15, 7, 0, 3, 0, 0, 0, 1, 17, 0, 5, 0, 0, 0, 0, 0, 1, 19, 9, 0, 0, 3, 0, 0, 0, 0, 1, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 23, 11, 7, 5, 0, 3, 0, 0, 0, 0, 0, 1, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]

cp's OEIS Frontend

A143315 Triangle read by rows: T(n, k) = 2*A126988(n, k) - signum(A126988(n, k)).

Table of values

List of values

n	a(n)
1	1
2	3
3	1
4	5
5	0
6	1
7	7
8	3
9	0
10	1
11	9
12	0
13	0
14	0
15	1
16	11
17	5
18	3
19	0
20	0
21	1
22	13
23	0
24	0
25	0
26	0
27	0
28	1
29	15
30	7
31	0
32	3
33	0
34	0
35	0
36	1
37	17
38	0
39	5
40	0
41	0
42	0
43	0
44	0
45	1
46	19
47	9
48	0
49	0
50	3
51	0
52	0
53	0
54	0
55	1
56	21
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	1
67	23
68	11
69	7
70	5
71	0
72	3
73	0
74	0
75	0
76	0
77	0
78	1
79	25
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	1

n	a(n)
1	1
2	3
3	1
4	5
5	0
6	1
7	7
8	3
9	0
10	1
11	9
12	0
13	0
14	0
15	1
16	11
17	5
18	3
19	0
20	0
21	1
22	13
23	0
24	0
25	0
26	0
27	0
28	1
29	15
30	7
31	0
32	3
33	0
34	0
35	0
36	1
37	17
38	0
39	5
40	0
41	0
42	0
43	0
44	0
45	1
46	19
47	9
48	0
49	0
50	3
51	0
52	0
53	0
54	0
55	1
56	21
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	1
67	23
68	11
69	7
70	5
71	0
72	3
73	0
74	0
75	0
76	0
77	0
78	1
79	25
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	1

n	a(n)
1	1
2	3
3	1
4	5
5	0
6	1
7	7
8	3
9	0
10	1
11	9
12	0
13	0
14	0
15	1
16	11
17	5
18	3
19	0
20	0
21	1
22	13
23	0
24	0
25	0
26	0
27	0
28	1
29	15
30	7
31	0
32	3
33	0
34	0
35	0
36	1
37	17
38	0
39	5
40	0
41	0
42	0
43	0
44	0
45	1
46	19
47	9
48	0
49	0
50	3
51	0
52	0
53	0
54	0
55	1
56	21
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	1
67	23
68	11
69	7
70	5
71	0
72	3
73	0
74	0
75	0
76	0
77	0
78	1
79	25
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	1