A177227 - cp's OEIS frontend

A177227 Triangle, read by rows, T(n, k) = -binomial(n,k) for 0 < k < n, otherwise T(n, k) = 2.

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

[2, 2, 2, 2, -2, 2, 2, -3, -3, 2, 2, -4, -6, -4, 2, 2, -5, -10, -10, -5, 2, 2, -6, -15, -20, -15, -6, 2, 2, -7, -21, -35, -35, -21, -7, 2, 2, -8, -28, -56, -70, -56, -28, -8, 2, 2, -9, -36, -84, -126, -126, -84, -36, -9, 2, 2, -10, -45, -120, -210, -252, -210, -120, -45, -10, 2]

cp's OEIS Frontend

A177227 Triangle, read by rows, T(n, k) = -binomial(n,k) for 0 < k < n, otherwise T(n, k) = 2.

Table of values

List of values