A360464 - cp's OEIS frontend

A360464 a(n) = a(n-1) + a(n-2) - a(n-3) + gcd(a(n-1), a(n-3)), with a(1) = a(2) = a(3) = 1.

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	5
7	7
8	10
9	17
10	21
11	29
12	34
13	43
14	49
15	59
16	66
17	77
18	85
19	97
20	106
21	119
22	129
23	143
24	154
25	169
26	193
27	209
28	234
29	251
30	277
31	295
32	322
33	341
34	369
35	389
36	418
37	439
38	469
39	491
40	522
41	545
42	577
43	601
44	634
45	659
46	693
47	719
48	754
49	781
50	817
51	845
52	882
53	911
54	949
55	979
56	1018
57	1049

[1, 1, 1, 2, 3, 5, 7, 10, 17, 21, 29, 34, 43, 49, 59, 66, 77, 85, 97, 106, 119, 129, 143, 154, 169, 193, 209, 234, 251, 277, 295, 322, 341, 369, 389, 418, 439, 469, 491, 522, 545, 577, 601, 634, 659, 693, 719, 754, 781, 817, 845, 882, 911, 949, 979, 1018, 1049]

cp's OEIS Frontend

A360464 a(n) = a(n-1) + a(n-2) - a(n-3) + gcd(a(n-1), a(n-3)), with a(1) = a(2) = a(3) = 1.

Table of values

List of values