A205966 - cp's OEIS frontend

A205966 a(n) = Fibonacci(n)A004016(n) for n>=1, with a(0)=1, where A004016(n) is the number of integer solutions (x,y) to x^2 + xy + y^2 = n.

n	a(n)
0	1
1	6
2	0
3	12
4	18
5	0
6	0
7	156
8	0
9	204
10	0
11	0
12	864
13	2796
14	0
15	0
16	5922
17	0
18	0
19	50172
20	0
21	131352
22	0
23	0
24	0
25	450150
26	0
27	1178508
28	3813732
29	0
30	0
31	16155228
32	0
33	0
34	0
35	0
36	89582112
37	289893804
38	0
39	758951832
40	0
41	0
42	0
43	5201933244
44	0
45	0
46	0
47	0
48	28845161856
49	140017356882
50	0
51	0

[1, 6, 0, 12, 18, 0, 0, 156, 0, 204, 0, 0, 864, 2796, 0, 0, 5922, 0, 0, 50172, 0, 131352, 0, 0, 0, 450150, 0, 1178508, 3813732, 0, 0, 16155228, 0, 0, 0, 0, 89582112, 289893804, 0, 758951832, 0, 0, 0, 5201933244, 0, 0, 0, 0, 28845161856, 140017356882, 0, 0]

cp's OEIS Frontend

A205966 a(n) = Fibonacci(n)A004016(n) for n>=1, with a(0)=1, where A004016(n) is the number of integer solutions (x,y) to x^2 + xy + y^2 = n.

Table of values

List of values

cp's OEIS Frontend

A205966 a(n) = Fibonacci(n)*A004016(n) for n>=1, with a(0)=1, where A004016(n) is the number of integer solutions (x,y) to x^2 + x*y + y^2 = n.

Table of values

List of values

A205966 a(n) = Fibonacci(n)A004016(n) for n>=1, with a(0)=1, where A004016(n) is the number of integer solutions (x,y) to x^2 + xy + y^2 = n.