A278072 - cp's OEIS frontend

A278072 Riordan array(1/(1+x), (1-sqrt(1-4x))/(2x)).

n	a(n)
0	1
1	-1
2	1
3	1
4	1
5	1
6	-1
7	4
8	3
9	1
10	1
11	10
12	11
13	5
14	1
15	-1
16	32
17	37
18	22
19	7
20	1
21	1
22	100
23	128
24	88
25	37
26	9
27	1
28	-1
29	329
30	444
31	341
32	171
33	56
34	11
35	1
36	1
37	1101
38	1558
39	1297
40	739
41	294
42	79
43	13
44	1
45	-1
46	3761
47	5514
48	4891
49	3069
50	1406
51	465
52	106
53	15
54	1
55	1
56	13035
57	19680
58	18365
59	12435
60	6346
61	2442
62	692
63	137
64	17
65	1

[1, -1, 1, 1, 1, 1, -1, 4, 3, 1, 1, 10, 11, 5, 1, -1, 32, 37, 22, 7, 1, 1, 100, 128, 88, 37, 9, 1, -1, 329, 444, 341, 171, 56, 11, 1, 1, 1101, 1558, 1297, 739, 294, 79, 13, 1, -1, 3761, 5514, 4891, 3069, 1406, 465, 106, 15, 1, 1, 13035, 19680, 18365, 12435, 6346, 2442, 692, 137, 17, 1]

cp's OEIS Frontend

A278072 Riordan array(1/(1+x), (1-sqrt(1-4x))/(2x)).

Table of values

List of values

cp's OEIS Frontend

A278072 Riordan array(1/(1+x), (1-sqrt(1-4*x))/(2*x)).

Table of values

List of values

A278072 Riordan array(1/(1+x), (1-sqrt(1-4x))/(2x)).