A128207 - cp's OEIS frontend

A128207 Number triangle T(n,k)=(-1)^(n-k)[k<=n]Product{i=k+1..n,Sum{j=0..i-1,F(j-1)}}.

n	a(n)
0	1
1	-1
2	1
3	1
4	-1
5	1
6	-2
7	2
8	-2
9	1
10	6
11	-6
12	6
13	-3
14	1
15	-30
16	30
17	-30
18	15
19	-5
20	1
21	240
22	-240
23	240
24	-120
25	40
26	-8
27	1
28	-3120
29	3120
30	-3120
31	1560
32	-520
33	104
34	-13
35	1
36	65520
37	-65520
38	65520
39	-32760
40	10920

[1, -1, 1, 1, -1, 1, -2, 2, -2, 1, 6, -6, 6, -3, 1, -30, 30, -30, 15, -5, 1, 240, -240, 240, -120, 40, -8, 1, -3120, 3120, -3120, 1560, -520, 104, -13, 1, 65520, -65520, 65520, -32760, 10920]

cp's OEIS Frontend

A128207 Number triangle T(n,k)=(-1)^(n-k)[k<=n]Product{i=k+1..n,Sum{j=0..i-1,F(j-1)}}.

Table of values

List of values

cp's OEIS Frontend

A128207 Number triangle T(n,k)=(-1)^(n-k)*[k<=n]*Product{i=k+1..n,Sum{j=0..i-1,F(j-1)}}.

Table of values

List of values

A128207 Number triangle T(n,k)=(-1)^(n-k)[k<=n]Product{i=k+1..n,Sum{j=0..i-1,F(j-1)}}.