A321119 - cp's OEIS frontend

A321119 a(n) = ((1 - sqrt(3))^n + (1 + sqrt(3))^n)/2^floor((n - 1)/2); n-th row common denominator of A321118.

n	a(n)
0	4
1	2
2	8
3	10
4	28
5	38
6	104
7	142
8	388
9	530
10	1448
11	1978
12	5404
13	7382
14	20168
15	27550
16	75268
17	102818
18	280904
19	383722
20	1048348
21	1432070
22	3912488
23	5344558
24	14601604
25	19946162
26	54493928
27	74440090
28	203374108
29	277814198
30	759002504
31	1036816702
32	2832635908
33	3869452610

[4, 2, 8, 10, 28, 38, 104, 142, 388, 530, 1448, 1978, 5404, 7382, 20168, 27550, 75268, 102818, 280904, 383722, 1048348, 1432070, 3912488, 5344558, 14601604, 19946162, 54493928, 74440090, 203374108, 277814198, 759002504, 1036816702, 2832635908, 3869452610]

cp's OEIS Frontend

A321119 a(n) = ((1 - sqrt(3))^n + (1 + sqrt(3))^n)/2^floor((n - 1)/2); n-th row common denominator of A321118.

Table of values

List of values