A144394 - cp's OEIS frontend

A144394 Triangle read by rows (n >= 4, 0 <= k <= n - 4): row n gives the coefficients in the expansion of ((x + 1)^n - (x^n + nx^(n - 1) + nx + 1))/x^2.

n	a(n)
4	6
5	10
6	10
7	15
8	20
9	15
10	21
11	35
12	35
13	21
14	28
15	56
16	70
17	56
18	28
19	36
20	84
21	126
22	126
23	84
24	36
25	45
26	120
27	210
28	252
29	210
30	120
31	45
32	55
33	165
34	330
35	462
36	462
37	330
38	165
39	55
40	66
41	220
42	495
43	792
44	924
45	792
46	495
47	220
48	66
49	78
50	286
51	715
52	1287
53	1716
54	1716
55	1287
56	715
57	286
58	78
59	91
60	364
61	1001
62	2002
63	3003
64	3432
65	3003
66	2002
67	1001
68	364
69	91

[6, 10, 10, 15, 20, 15, 21, 35, 35, 21, 28, 56, 70, 56, 28, 36, 84, 126, 126, 84, 36, 45, 120, 210, 252, 210, 120, 45, 55, 165, 330, 462, 462, 330, 165, 55, 66, 220, 495, 792, 924, 792, 495, 220, 66, 78, 286, 715, 1287, 1716, 1716, 1287, 715, 286, 78, 91, 364, 1001, 2002, 3003, 3432, 3003, 2002, 1001, 364, 91]

cp's OEIS Frontend

A144394 Triangle read by rows (n >= 4, 0 <= k <= n - 4): row n gives the coefficients in the expansion of ((x + 1)^n - (x^n + nx^(n - 1) + nx + 1))/x^2.

Table of values

List of values

cp's OEIS Frontend

A144394 Triangle read by rows (n >= 4, 0 <= k <= n - 4): row n gives the coefficients in the expansion of ((x + 1)^n - (x^n + n*x^(n - 1) + n*x + 1))/x^2.

Table of values

List of values

A144394 Triangle read by rows (n >= 4, 0 <= k <= n - 4): row n gives the coefficients in the expansion of ((x + 1)^n - (x^n + nx^(n - 1) + nx + 1))/x^2.