A061554 - cp's OEIS frontend

A061554 Square table read by antidiagonals: a(n,k) = binomial(n+k, floor(k/2)).

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	3
7	3
8	1
9	1
10	6
11	4
12	4
13	1
14	1
15	10
16	10
17	5
18	5
19	1
20	1
21	20
22	15
23	15
24	6
25	6
26	1
27	1
28	35
29	35
30	21
31	21
32	7
33	7
34	1
35	1
36	70
37	56
38	56
39	28
40	28
41	8
42	8
43	1
44	1
45	126
46	126
47	84
48	84
49	36
50	36
51	9
52	9
53	1
54	1
55	252
56	210
57	210
58	120
59	120
60	45
61	45
62	10
63	10
64	1
65	1
66	462
67	462
68	330
69	330
70	165
71	165
72	55
73	55
74	11
75	11
76	1
77	1

[1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 6, 4, 4, 1, 1, 10, 10, 5, 5, 1, 1, 20, 15, 15, 6, 6, 1, 1, 35, 35, 21, 21, 7, 7, 1, 1, 70, 56, 56, 28, 28, 8, 8, 1, 1, 126, 126, 84, 84, 36, 36, 9, 9, 1, 1, 252, 210, 210, 120, 120, 45, 45, 10, 10, 1, 1, 462, 462, 330, 330, 165, 165, 55, 55, 11, 11, 1, 1]

cp's OEIS Frontend

A061554 Square table read by antidiagonals: a(n,k) = binomial(n+k, floor(k/2)).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	3
7	3
8	1
9	1
10	6
11	4
12	4
13	1
14	1
15	10
16	10
17	5
18	5
19	1
20	1
21	20
22	15
23	15
24	6
25	6
26	1
27	1
28	35
29	35
30	21
31	21
32	7
33	7
34	1
35	1
36	70
37	56
38	56
39	28
40	28
41	8
42	8
43	1
44	1
45	126
46	126
47	84
48	84
49	36
50	36
51	9
52	9
53	1
54	1
55	252
56	210
57	210
58	120
59	120
60	45
61	45
62	10
63	10
64	1
65	1
66	462
67	462
68	330
69	330
70	165
71	165
72	55
73	55
74	11
75	11
76	1
77	1

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	3
7	3
8	1
9	1
10	6
11	4
12	4
13	1
14	1
15	10
16	10
17	5
18	5
19	1
20	1
21	20
22	15
23	15
24	6
25	6
26	1
27	1
28	35
29	35
30	21
31	21
32	7
33	7
34	1
35	1
36	70
37	56
38	56
39	28
40	28
41	8
42	8
43	1
44	1
45	126
46	126
47	84
48	84
49	36
50	36
51	9
52	9
53	1
54	1
55	252
56	210
57	210
58	120
59	120
60	45
61	45
62	10
63	10
64	1
65	1
66	462
67	462
68	330
69	330
70	165
71	165
72	55
73	55
74	11
75	11
76	1
77	1

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	3
7	3
8	1
9	1
10	6
11	4
12	4
13	1
14	1
15	10
16	10
17	5
18	5
19	1
20	1
21	20
22	15
23	15
24	6
25	6
26	1
27	1
28	35
29	35
30	21
31	21
32	7
33	7
34	1
35	1
36	70
37	56
38	56
39	28
40	28
41	8
42	8
43	1
44	1
45	126
46	126
47	84
48	84
49	36
50	36
51	9
52	9
53	1
54	1
55	252
56	210
57	210
58	120
59	120
60	45
61	45
62	10
63	10
64	1
65	1
66	462
67	462
68	330
69	330
70	165
71	165
72	55
73	55
74	11
75	11
76	1
77	1