A131779 - cp's OEIS frontend

A131779 Triangle read by rows: T(n,k) = 2*A065941(n-1,k-1) - (-1)^(n+k).

n	a(n)
1	1
2	3
3	1
4	1
5	3
6	1
7	3
8	1
9	5
10	1
11	1
12	3
13	5
14	5
15	1
16	3
17	1
18	9
19	5
20	7
21	1
22	1
23	3
24	9
25	9
26	11
27	7
28	1
29	3
30	1
31	13
32	9
33	21
34	11
35	9
36	1
37	1
38	3
39	13
40	13
41	29
42	21
43	19
44	9
45	1
46	3
47	1
48	17
49	13
50	43
51	29
52	41
53	19
54	11
55	1
56	1
57	3
58	17
59	17
60	55
61	43
62	69
63	41
64	29
65	11
66	1
67	3
68	1
69	21
70	17
71	73
72	55
73	113
74	69
75	71
76	29
77	13
78	1

[1, 3, 1, 1, 3, 1, 3, 1, 5, 1, 1, 3, 5, 5, 1, 3, 1, 9, 5, 7, 1, 1, 3, 9, 9, 11, 7, 1, 3, 1, 13, 9, 21, 11, 9, 1, 1, 3, 13, 13, 29, 21, 19, 9, 1, 3, 1, 17, 13, 43, 29, 41, 19, 11, 1, 1, 3, 17, 17, 55, 43, 69, 41, 29, 11, 1, 3, 1, 21, 17, 73, 55, 113, 69, 71, 29, 13, 1]

cp's OEIS Frontend

A131779 Triangle read by rows: T(n,k) = 2*A065941(n-1,k-1) - (-1)^(n+k).

Table of values

List of values

n	a(n)
1	1
2	3
3	1
4	1
5	3
6	1
7	3
8	1
9	5
10	1
11	1
12	3
13	5
14	5
15	1
16	3
17	1
18	9
19	5
20	7
21	1
22	1
23	3
24	9
25	9
26	11
27	7
28	1
29	3
30	1
31	13
32	9
33	21
34	11
35	9
36	1
37	1
38	3
39	13
40	13
41	29
42	21
43	19
44	9
45	1
46	3
47	1
48	17
49	13
50	43
51	29
52	41
53	19
54	11
55	1
56	1
57	3
58	17
59	17
60	55
61	43
62	69
63	41
64	29
65	11
66	1
67	3
68	1
69	21
70	17
71	73
72	55
73	113
74	69
75	71
76	29
77	13
78	1

n	a(n)
1	1
2	3
3	1
4	1
5	3
6	1
7	3
8	1
9	5
10	1
11	1
12	3
13	5
14	5
15	1
16	3
17	1
18	9
19	5
20	7
21	1
22	1
23	3
24	9
25	9
26	11
27	7
28	1
29	3
30	1
31	13
32	9
33	21
34	11
35	9
36	1
37	1
38	3
39	13
40	13
41	29
42	21
43	19
44	9
45	1
46	3
47	1
48	17
49	13
50	43
51	29
52	41
53	19
54	11
55	1
56	1
57	3
58	17
59	17
60	55
61	43
62	69
63	41
64	29
65	11
66	1
67	3
68	1
69	21
70	17
71	73
72	55
73	113
74	69
75	71
76	29
77	13
78	1

n	a(n)
1	1
2	3
3	1
4	1
5	3
6	1
7	3
8	1
9	5
10	1
11	1
12	3
13	5
14	5
15	1
16	3
17	1
18	9
19	5
20	7
21	1
22	1
23	3
24	9
25	9
26	11
27	7
28	1
29	3
30	1
31	13
32	9
33	21
34	11
35	9
36	1
37	1
38	3
39	13
40	13
41	29
42	21
43	19
44	9
45	1
46	3
47	1
48	17
49	13
50	43
51	29
52	41
53	19
54	11
55	1
56	1
57	3
58	17
59	17
60	55
61	43
62	69
63	41
64	29
65	11
66	1
67	3
68	1
69	21
70	17
71	73
72	55
73	113
74	69
75	71
76	29
77	13
78	1