A376930 - cp's OEIS frontend

A376930 a(0)=0, a(1)=1; for n>1, a(n) = a(n-1)+a(n-2), except where a(n-1) is a prime greater than 2, in which case a(n) = a(n-1)-a(n-2).

n	a(n)
0	0
1	1
2	1
3	2
4	3
5	1
6	4
7	5
8	1
9	6
10	7
11	1
12	8
13	9
14	17
15	8
16	25
17	33
18	58
19	91
20	149
21	58
22	207
23	265
24	472
25	737
26	1209
27	1946
28	3155
29	5101
30	1946
31	7047
32	8993
33	16040
34	25033
35	8993
36	34026
37	43019
38	8993
39	52012
40	61005
41	113017
42	52012
43	165029
44	217041
45	382070
46	599111
47	981181
48	1580292
49	2561473

[0, 1, 1, 2, 3, 1, 4, 5, 1, 6, 7, 1, 8, 9, 17, 8, 25, 33, 58, 91, 149, 58, 207, 265, 472, 737, 1209, 1946, 3155, 5101, 1946, 7047, 8993, 16040, 25033, 8993, 34026, 43019, 8993, 52012, 61005, 113017, 52012, 165029, 217041, 382070, 599111, 981181, 1580292, 2561473]

cp's OEIS Frontend

A376930 a(0)=0, a(1)=1; for n>1, a(n) = a(n-1)+a(n-2), except where a(n-1) is a prime greater than 2, in which case a(n) = a(n-1)-a(n-2).

Table of values

List of values