A127218 - cp's OEIS frontend

A127218 Half-indexed Lucas numbers second version L(n)=A000032=Lucas numbers a(0)=2, a(1)=2, a(2)=1, a(3)=2, a(4)=3, a(5)=3, a(2n)=L(n), for n>2: a(2n+1)=L(n)+L(n-3)=2*L(n-1) for n>5: a(n)+a(n+2)=a(n+4) a(2n)=L(n), so a(n)=L(n/2).

n	a(n)
0	2
1	2
2	1
3	2
4	3
5	3
6	4
7	6
8	7
9	8
10	11
11	14
12	18
13	22
14	29
15	36
16	47
17	58
18	76
19	94
20	123
21	152
22	199
23	246
24	322
25	398
26	521
27	644
28	843
29	1042
30	1364
31	1686
32	2207
33	2728
34	3571
35	4414
36	5778
37	7142
38	9349
39	11556
40	15127
41	18698
42	24476
43	30254
44	39603
45	48952
46	64079

[2, 2, 1, 2, 3, 3, 4, 6, 7, 8, 11, 14, 18, 22, 29, 36, 47, 58, 76, 94, 123, 152, 199, 246, 322, 398, 521, 644, 843, 1042, 1364, 1686, 2207, 2728, 3571, 4414, 5778, 7142, 9349, 11556, 15127, 18698, 24476, 30254, 39603, 48952, 64079]

cp's OEIS Frontend

A127218 Half-indexed Lucas numbers second version L(n)=A000032=Lucas numbers a(0)=2, a(1)=2, a(2)=1, a(3)=2, a(4)=3, a(5)=3, a(2n)=L(n), for n>2: a(2n+1)=L(n)+L(n-3)=2*L(n-1) for n>5: a(n)+a(n+2)=a(n+4) a(2n)=L(n), so a(n)=L(n/2).

Table of values

List of values