A309852 - cp's OEIS frontend

A309852 Array read by antidiagonals: ((z+sqrt(x))/2)^k + ((z-sqrt(x))/2)^k for columns k >= 0 and rows n >= 0, where x = 4*n+1 and y = floor(sqrt(x)) and z = y-1+(y mod 2).

n	a(n)
0	2
1	1
2	2
3	1
4	1
5	2
6	1
7	3
8	3
9	2
10	1
11	4
12	9
13	3
14	2
15	1
16	7
17	27
18	11
19	3
20	2
21	1
22	11
23	81
24	36
25	13
26	3
27	2
28	1
29	18
30	243
31	119
32	45
33	15
34	5
35	2
36	1
37	29
38	729
39	393
40	161
41	54
42	25
43	5
44	2
45	1
46	47
47	2187
48	1298
49	573
50	207
51	125
52	27
53	5
54	2
55	1
56	76
57	6561
58	4287
59	2041
60	783
61	625
62	140
63	29
64	5
65	2

[2, 1, 2, 1, 1, 2, 1, 3, 3, 2, 1, 4, 9, 3, 2, 1, 7, 27, 11, 3, 2, 1, 11, 81, 36, 13, 3, 2, 1, 18, 243, 119, 45, 15, 5, 2, 1, 29, 729, 393, 161, 54, 25, 5, 2, 1, 47, 2187, 1298, 573, 207, 125, 27, 5, 2, 1, 76, 6561, 4287, 2041, 783, 625, 140, 29, 5, 2]

cp's OEIS Frontend

A309852 Array read by antidiagonals: ((z+sqrt(x))/2)^k + ((z-sqrt(x))/2)^k for columns k >= 0 and rows n >= 0, where x = 4*n+1 and y = floor(sqrt(x)) and z = y-1+(y mod 2).

Table of values

List of values