A274613 - cp's OEIS frontend

A274613 Array T(n,k) = numerator of binomial(k,n)/2^k read by antidiagonals omitting the zeros (upper triangle), a sequence related to Jacobsthal numbers.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	3
8	1
9	3
10	1
11	1
12	1
13	3
14	5
15	1
16	1
17	5
18	3
19	1
20	1
21	5
22	15
23	7
24	1
25	5
26	5
27	21
28	1
29	1
30	1
31	15
32	35
33	7
34	9
35	1
36	3
37	35
38	7
39	9
40	5
41	1
42	1
43	21
44	35
45	21
46	45
47	11
48	1
49	7
50	7
51	63
52	15
53	55
54	3
55	1
56	1
57	7
58	63
59	105
60	165
61	33
62	13
63	1
64	1
65	21
66	63
67	165
68	55
69	39
70	7
71	1
72	1
73	9
74	105
75	231
76	495
77	143
78	91
79	15
80	1

[1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 5, 1, 1, 5, 3, 1, 1, 5, 15, 7, 1, 5, 5, 21, 1, 1, 1, 15, 35, 7, 9, 1, 3, 35, 7, 9, 5, 1, 1, 21, 35, 21, 45, 11, 1, 7, 7, 63, 15, 55, 3, 1, 1, 7, 63, 105, 165, 33, 13, 1, 1, 21, 63, 165, 55, 39, 7, 1, 1, 9, 105, 231, 495, 143, 91, 15, 1]

cp's OEIS Frontend

A274613 Array T(n,k) = numerator of binomial(k,n)/2^k read by antidiagonals omitting the zeros (upper triangle), a sequence related to Jacobsthal numbers.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	3
8	1
9	3
10	1
11	1
12	1
13	3
14	5
15	1
16	1
17	5
18	3
19	1
20	1
21	5
22	15
23	7
24	1
25	5
26	5
27	21
28	1
29	1
30	1
31	15
32	35
33	7
34	9
35	1
36	3
37	35
38	7
39	9
40	5
41	1
42	1
43	21
44	35
45	21
46	45
47	11
48	1
49	7
50	7
51	63
52	15
53	55
54	3
55	1
56	1
57	7
58	63
59	105
60	165
61	33
62	13
63	1
64	1
65	21
66	63
67	165
68	55
69	39
70	7
71	1
72	1
73	9
74	105
75	231
76	495
77	143
78	91
79	15
80	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	3
8	1
9	3
10	1
11	1
12	1
13	3
14	5
15	1
16	1
17	5
18	3
19	1
20	1
21	5
22	15
23	7
24	1
25	5
26	5
27	21
28	1
29	1
30	1
31	15
32	35
33	7
34	9
35	1
36	3
37	35
38	7
39	9
40	5
41	1
42	1
43	21
44	35
45	21
46	45
47	11
48	1
49	7
50	7
51	63
52	15
53	55
54	3
55	1
56	1
57	7
58	63
59	105
60	165
61	33
62	13
63	1
64	1
65	21
66	63
67	165
68	55
69	39
70	7
71	1
72	1
73	9
74	105
75	231
76	495
77	143
78	91
79	15
80	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	3
8	1
9	3
10	1
11	1
12	1
13	3
14	5
15	1
16	1
17	5
18	3
19	1
20	1
21	5
22	15
23	7
24	1
25	5
26	5
27	21
28	1
29	1
30	1
31	15
32	35
33	7
34	9
35	1
36	3
37	35
38	7
39	9
40	5
41	1
42	1
43	21
44	35
45	21
46	45
47	11
48	1
49	7
50	7
51	63
52	15
53	55
54	3
55	1
56	1
57	7
58	63
59	105
60	165
61	33
62	13
63	1
64	1
65	21
66	63
67	165
68	55
69	39
70	7
71	1
72	1
73	9
74	105
75	231
76	495
77	143
78	91
79	15
80	1