A272638 - cp's OEIS frontend

A272638 a(1)=1, a(2)=4; thereafter a(n) = squarefree part of a(n-1)+a(n-2).

n	a(n)
1	1
2	4
3	5
4	1
5	6
6	7
7	13
8	5
9	2
10	7
11	1
12	2
13	3
14	5
15	2
16	7
17	1
18	2
19	3
20	5
21	2
22	7
23	1
24	2
25	3
26	5
27	2
28	7
29	1
30	2
31	3
32	5
33	2
34	7
35	1
36	2
37	3
38	5
39	2
40	7
41	1
42	2
43	3
44	5
45	2
46	7
47	1
48	2
49	3
50	5
51	2
52	7
53	1
54	2
55	3
56	5
57	2
58	7
59	1
60	2
61	3
62	5
63	2
64	7
65	1
66	2
67	3
68	5
69	2
70	7
71	1
72	2
73	3
74	5
75	2
76	7
77	1
78	2
79	3
80	5
81	2
82	7
83	1
84	2
85	3
86	5
87	2
88	7

[1, 4, 5, 1, 6, 7, 13, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7, 1, 2, 3, 5, 2, 7]

cp's OEIS Frontend

A272638 a(1)=1, a(2)=4; thereafter a(n) = squarefree part of a(n-1)+a(n-2).

Table of values

List of values

n	a(n)
1	1
2	4
3	5
4	1
5	6
6	7
7	13
8	5
9	2
10	7
11	1
12	2
13	3
14	5
15	2
16	7
17	1
18	2
19	3
20	5
21	2
22	7
23	1
24	2
25	3
26	5
27	2
28	7
29	1
30	2
31	3
32	5
33	2
34	7
35	1
36	2
37	3
38	5
39	2
40	7
41	1
42	2
43	3
44	5
45	2
46	7
47	1
48	2
49	3
50	5
51	2
52	7
53	1
54	2
55	3
56	5
57	2
58	7
59	1
60	2
61	3
62	5
63	2
64	7
65	1
66	2
67	3
68	5
69	2
70	7
71	1
72	2
73	3
74	5
75	2
76	7
77	1
78	2
79	3
80	5
81	2
82	7
83	1
84	2
85	3
86	5
87	2
88	7

n	a(n)
1	1
2	4
3	5
4	1
5	6
6	7
7	13
8	5
9	2
10	7
11	1
12	2
13	3
14	5
15	2
16	7
17	1
18	2
19	3
20	5
21	2
22	7
23	1
24	2
25	3
26	5
27	2
28	7
29	1
30	2
31	3
32	5
33	2
34	7
35	1
36	2
37	3
38	5
39	2
40	7
41	1
42	2
43	3
44	5
45	2
46	7
47	1
48	2
49	3
50	5
51	2
52	7
53	1
54	2
55	3
56	5
57	2
58	7
59	1
60	2
61	3
62	5
63	2
64	7
65	1
66	2
67	3
68	5
69	2
70	7
71	1
72	2
73	3
74	5
75	2
76	7
77	1
78	2
79	3
80	5
81	2
82	7
83	1
84	2
85	3
86	5
87	2
88	7

n	a(n)
1	1
2	4
3	5
4	1
5	6
6	7
7	13
8	5
9	2
10	7
11	1
12	2
13	3
14	5
15	2
16	7
17	1
18	2
19	3
20	5
21	2
22	7
23	1
24	2
25	3
26	5
27	2
28	7
29	1
30	2
31	3
32	5
33	2
34	7
35	1
36	2
37	3
38	5
39	2
40	7
41	1
42	2
43	3
44	5
45	2
46	7
47	1
48	2
49	3
50	5
51	2
52	7
53	1
54	2
55	3
56	5
57	2
58	7
59	1
60	2
61	3
62	5
63	2
64	7
65	1
66	2
67	3
68	5
69	2
70	7
71	1
72	2
73	3
74	5
75	2
76	7
77	1
78	2
79	3
80	5
81	2
82	7
83	1
84	2
85	3
86	5
87	2
88	7