A343575 - cp's OEIS frontend

A343575 a(n) = floor((2+sqrt(5))^n - 2^(n+1)) mod (20*n).

n	a(n)
1	0
2	9
3	0
4	49
5	0
6	9
7	0
8	129
9	60
10	49
11	0
12	49
13	0
14	9
15	100
16	129
17	0
18	249
19	0
20	49
21	340
22	9
23	0
24	449
25	0
26	9
27	240
28	289
29	0
30	249
31	0
32	129
33	60
34	9
35	600
36	49
37	0
38	9
39	580
40	449
41	0
42	609
43	0
44	289
45	700
46	9
47	0
48	449
49	700
50	249
51	60
52	289
53	0
54	969
55	200
56	129
57	60
58	9
59	0
60	49
61	0
62	9
63	1240
64	769
65	0
66	369
67	0

[0, 9, 0, 49, 0, 9, 0, 129, 60, 49, 0, 49, 0, 9, 100, 129, 0, 249, 0, 49, 340, 9, 0, 449, 0, 9, 240, 289, 0, 249, 0, 129, 60, 9, 600, 49, 0, 9, 580, 449, 0, 609, 0, 289, 700, 9, 0, 449, 700, 249, 60, 289, 0, 969, 200, 129, 60, 9, 0, 49, 0, 9, 1240, 769, 0, 369, 0]

cp's OEIS Frontend

A343575 a(n) = floor((2+sqrt(5))^n - 2^(n+1)) mod (20*n).

Table of values

List of values