A089940 - cp's OEIS frontend

A089940 Triangle read by rows: T(n,k)=binomial(n+k,floor((n-k)/2)).

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	3
7	4
8	1
9	1
10	6
11	5
12	6
13	1
14	1
15	10
16	15
17	7
18	8
19	1
20	1
21	20
22	21
23	28
24	9
25	10
26	1
27	1
28	35
29	56
30	36
31	45
32	11
33	12
34	1
35	1
36	70
37	84
38	120
39	55
40	66
41	13
42	14
43	1
44	1
45	126
46	210
47	165
48	220
49	78
50	91
51	15
52	16
53	1
54	1
55	252
56	330
57	495
58	286
59	364
60	105
61	120
62	17
63	18
64	1
65	1
66	462
67	792
68	715
69	1001
70	455
71	560
72	136
73	153

[1, 1, 1, 2, 1, 1, 3, 4, 1, 1, 6, 5, 6, 1, 1, 10, 15, 7, 8, 1, 1, 20, 21, 28, 9, 10, 1, 1, 35, 56, 36, 45, 11, 12, 1, 1, 70, 84, 120, 55, 66, 13, 14, 1, 1, 126, 210, 165, 220, 78, 91, 15, 16, 1, 1, 252, 330, 495, 286, 364, 105, 120, 17, 18, 1, 1, 462, 792, 715, 1001, 455, 560, 136, 153]

cp's OEIS Frontend

A089940 Triangle read by rows: T(n,k)=binomial(n+k,floor((n-k)/2)).

Table of values

List of values