A341312 - cp's OEIS frontend

A341312 a(n) = a(n-1) + a(n-3) unless a(n-1) and a(n-3) are both even in which case a(n) = (a(n-1) + a(n-3))/2, with a(0) = a(1) = a(2) = 1.

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	3
7	6
8	5
9	8
10	7
11	12
12	10
13	17
14	29
15	39
16	56
17	85
18	124
19	90
20	175
21	299
22	389
23	564
24	863
25	1252
26	908
27	1771
28	3023
29	3931
30	5702
31	8725
32	12656
33	9179
34	17904
35	15280
36	24459
37	42363
38	57643
39	82102
40	124465
41	182108
42	132105
43	256570
44	219339
45	351444
46	304007
47	523346
48	437395
49	741402
50	632374

[1, 1, 1, 2, 3, 4, 3, 6, 5, 8, 7, 12, 10, 17, 29, 39, 56, 85, 124, 90, 175, 299, 389, 564, 863, 1252, 908, 1771, 3023, 3931, 5702, 8725, 12656, 9179, 17904, 15280, 24459, 42363, 57643, 82102, 124465, 182108, 132105, 256570, 219339, 351444, 304007, 523346, 437395, 741402, 632374]

cp's OEIS Frontend

A341312 a(n) = a(n-1) + a(n-3) unless a(n-1) and a(n-3) are both even in which case a(n) = (a(n-1) + a(n-3))/2, with a(0) = a(1) = a(2) = 1.

Table of values

List of values