A201864 - cp's OEIS frontend

A201864 a(n) = ((F(n-1)+F(n-2))-1)/2 if F(n) is odd, otherwise a(n) = ((F(n-1)+F(n-2))-2)/2, where F(n) = A000045(n) is the n-th Fibonacci number.

n	a(n)
1	0
2	0
3	0
4	1
5	2
6	3
7	6
8	10
9	16
10	27
11	44
12	71
13	116
14	188
15	304
16	493
17	798
18	1291
19	2090
20	3382
21	5472
22	8855
23	14328
24	23183
25	37512
26	60696
27	98208
28	158905
29	257114
30	416019
31	673134
32	1089154
33	1762288
34	2851443
35	4613732
36	7465175
37	12078908
38	19544084
39	31622992
40	51167077
41	82790070

[0, 0, 0, 1, 2, 3, 6, 10, 16, 27, 44, 71, 116, 188, 304, 493, 798, 1291, 2090, 3382, 5472, 8855, 14328, 23183, 37512, 60696, 98208, 158905, 257114, 416019, 673134, 1089154, 1762288, 2851443, 4613732, 7465175, 12078908, 19544084, 31622992, 51167077, 82790070]

cp's OEIS Frontend

A201864 a(n) = ((F(n-1)+F(n-2))-1)/2 if F(n) is odd, otherwise a(n) = ((F(n-1)+F(n-2))-2)/2, where F(n) = A000045(n) is the n-th Fibonacci number.

Table of values

List of values