A244478 - cp's OEIS frontend

A244478 a(0)=2, a(1)=0, a(2)=2; thereafter a(n) = a(n-1-a(n-1))+a(n-2-a(n-2)) unless a(n-1) <= n-1 or a(n-2) <= n-2 in which case the sequence terminates.

n	a(n)
0	2
1	0
2	2
3	2
4	2
5	2
6	4
7	4
8	4
9	4
10	4
11	6
12	6
13	6
14	8
15	8
16	8
17	8
18	8
19	8
20	10
21	10
22	10
23	12
24	12
25	12
26	12
27	14
28	14
29	14
30	16
31	16
32	16
33	16
34	16
35	16
36	16
37	18
38	18
39	18
40	20
41	20
42	20
43	20
44	22
45	22
46	22
47	24
48	24
49	24
50	24
51	24
52	26
53	26
54	26
55	28
56	28
57	28
58	28
59	30
60	30
61	30
62	32
63	32
64	32
65	32
66	32
67	32
68	32
69	32
70	34
71	34
72	34
73	36
74	36
75	36
76	36
77	38
78	38
79	38

[2, 0, 2, 2, 2, 2, 4, 4, 4, 4, 4, 6, 6, 6, 8, 8, 8, 8, 8, 8, 10, 10, 10, 12, 12, 12, 12, 14, 14, 14, 16, 16, 16, 16, 16, 16, 16, 18, 18, 18, 20, 20, 20, 20, 22, 22, 22, 24, 24, 24, 24, 24, 26, 26, 26, 28, 28, 28, 28, 30, 30, 30, 32, 32, 32, 32, 32, 32, 32, 32, 34, 34, 34, 36, 36, 36, 36, 38, 38, 38]

cp's OEIS Frontend

A244478 a(0)=2, a(1)=0, a(2)=2; thereafter a(n) = a(n-1-a(n-1))+a(n-2-a(n-2)) unless a(n-1) <= n-1 or a(n-2) <= n-2 in which case the sequence terminates.

Table of values

List of values

n	a(n)
0	2
1	0
2	2
3	2
4	2
5	2
6	4
7	4
8	4
9	4
10	4
11	6
12	6
13	6
14	8
15	8
16	8
17	8
18	8
19	8
20	10
21	10
22	10
23	12
24	12
25	12
26	12
27	14
28	14
29	14
30	16
31	16
32	16
33	16
34	16
35	16
36	16
37	18
38	18
39	18
40	20
41	20
42	20
43	20
44	22
45	22
46	22
47	24
48	24
49	24
50	24
51	24
52	26
53	26
54	26
55	28
56	28
57	28
58	28
59	30
60	30
61	30
62	32
63	32
64	32
65	32
66	32
67	32
68	32
69	32
70	34
71	34
72	34
73	36
74	36
75	36
76	36
77	38
78	38
79	38

n	a(n)
0	2
1	0
2	2
3	2
4	2
5	2
6	4
7	4
8	4
9	4
10	4
11	6
12	6
13	6
14	8
15	8
16	8
17	8
18	8
19	8
20	10
21	10
22	10
23	12
24	12
25	12
26	12
27	14
28	14
29	14
30	16
31	16
32	16
33	16
34	16
35	16
36	16
37	18
38	18
39	18
40	20
41	20
42	20
43	20
44	22
45	22
46	22
47	24
48	24
49	24
50	24
51	24
52	26
53	26
54	26
55	28
56	28
57	28
58	28
59	30
60	30
61	30
62	32
63	32
64	32
65	32
66	32
67	32
68	32
69	32
70	34
71	34
72	34
73	36
74	36
75	36
76	36
77	38
78	38
79	38

n	a(n)
0	2
1	0
2	2
3	2
4	2
5	2
6	4
7	4
8	4
9	4
10	4
11	6
12	6
13	6
14	8
15	8
16	8
17	8
18	8
19	8
20	10
21	10
22	10
23	12
24	12
25	12
26	12
27	14
28	14
29	14
30	16
31	16
32	16
33	16
34	16
35	16
36	16
37	18
38	18
39	18
40	20
41	20
42	20
43	20
44	22
45	22
46	22
47	24
48	24
49	24
50	24
51	24
52	26
53	26
54	26
55	28
56	28
57	28
58	28
59	30
60	30
61	30
62	32
63	32
64	32
65	32
66	32
67	32
68	32
69	32
70	34
71	34
72	34
73	36
74	36
75	36
76	36
77	38
78	38
79	38