A124821 - cp's OEIS frontend

A124821 Number triangle T(n,k)=(-1)^(n-k)(3k+2)C(3n+1, n-k)/(2n+k+2).

n	a(n)
0	1
1	-2
2	1
3	7
4	-5
5	1
6	-30
7	25
8	-8
9	1
10	143
11	-130
12	52
13	-11
14	1
15	-728
16	700
17	-320
18	88
19	-14
20	1
21	3876
22	-3876
23	1938
24	-627
25	133
26	-17
27	1
28	-21318
29	21945
30	-11704
31	4235
32	-1078
33	187
34	-20
35	1
36	120175
37	-126500
38	70840
39	-27830
40	8050
41	-1700

[1, -2, 1, 7, -5, 1, -30, 25, -8, 1, 143, -130, 52, -11, 1, -728, 700, -320, 88, -14, 1, 3876, -3876, 1938, -627, 133, -17, 1, -21318, 21945, -11704, 4235, -1078, 187, -20, 1, 120175, -126500, 70840, -27830, 8050, -1700]

cp's OEIS Frontend

A124821 Number triangle T(n,k)=(-1)^(n-k)(3k+2)C(3n+1, n-k)/(2n+k+2).

Table of values

List of values

cp's OEIS Frontend

A124821 Number triangle T(n,k)=(-1)^(n-k)*(3k+2)*C(3n+1, n-k)/(2n+k+2).

Table of values

List of values

A124821 Number triangle T(n,k)=(-1)^(n-k)(3k+2)C(3n+1, n-k)/(2n+k+2).