A136424 - cp's OEIS frontend

A136424 a(n) = floor((x^n - (1-x)^n) / (2x-1) +.5) where x = (sqrt(6)+1)/2 (and hence 2x-1 = sqrt(6)).

n	a(n)
1	1
2	1
3	2
4	4
5	6
6	11
7	19
8	32
9	55
10	95
11	164
12	283
13	488
14	842
15	1451
16	2503
17	4318
18	7447
19	12844
20	22152
21	38207
22	65898
23	113657
24	196029
25	338101
26	583137
27	1005763
28	1734685
29	2991888
30	5160244
31	8900104
32	15350410
33	26475540
34	45663552
35	78757977
36	135837417

[1, 1, 2, 4, 6, 11, 19, 32, 55, 95, 164, 283, 488, 842, 1451, 2503, 4318, 7447, 12844, 22152, 38207, 65898, 113657, 196029, 338101, 583137, 1005763, 1734685, 2991888, 5160244, 8900104, 15350410, 26475540, 45663552, 78757977, 135837417]

cp's OEIS Frontend

A136424 a(n) = floor((x^n - (1-x)^n) / (2x-1) +.5) where x = (sqrt(6)+1)/2 (and hence 2x-1 = sqrt(6)).

Table of values

List of values