A127803 - cp's OEIS frontend

A127803 Inverse of number triangle A(n,k) = 1/(2*2^n-1) if k <= n <= 2k, 0 otherwise.

n	a(n)
0	1
1	0
2	3
3	0
4	-3
5	7
6	0
7	3
8	-7
9	15
10	0
11	0
12	0
13	-15
14	31
15	0
16	-3
17	7
18	0
19	-31
20	63
21	0
22	0
23	0
24	0
25	0
26	-63
27	127
28	0
29	3
30	-7
31	15
32	0
33	0
34	-127
35	255
36	0
37	0
38	0
39	0
40	0
41	0
42	0
43	-255
44	511
45	0
46	0
47	0
48	-15
49	31
50	0
51	0
52	0
53	-511
54	1023
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	-1023
65	2047

[1, 0, 3, 0, -3, 7, 0, 3, -7, 15, 0, 0, 0, -15, 31, 0, -3, 7, 0, -31, 63, 0, 0, 0, 0, 0, -63, 127, 0, 3, -7, 15, 0, 0, -127, 255, 0, 0, 0, 0, 0, 0, 0, -255, 511, 0, 0, 0, -15, 31, 0, 0, 0, -511, 1023, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1023, 2047]

cp's OEIS Frontend

A127803 Inverse of number triangle A(n,k) = 1/(2*2^n-1) if k <= n <= 2k, 0 otherwise.

Table of values

List of values