A025120 - cp's OEIS frontend

A025120 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A000201 (lower Wythoff sequence), t = A023533.

n	a(n)
1	0
2	0
3	1
4	3
5	4
6	0
7	0
8	0
9	1
10	3
11	4
12	6
13	8
14	9
15	11
16	12
17	14
18	0
19	1
20	3
21	4
22	6
23	8
24	9
25	11
26	12
27	14
28	16
29	17
30	19
31	21
32	22
33	24
34	26
35	30
36	33
37	36
38	8
39	9
40	11
41	12
42	14
43	16
44	17
45	19
46	21
47	22
48	24
49	25
50	27
51	29
52	30
53	32
54	33
55	36
56	40
57	42
58	46
59	50
60	52
61	56
62	58
63	62
64	66
65	68
66	72
67	76
68	22
69	24
70	25
71	27
72	29
73	30
74	32
75	33
76	35
77	37
78	38
79	40
80	42
81	43
82	45

[0, 0, 1, 3, 4, 0, 0, 0, 1, 3, 4, 6, 8, 9, 11, 12, 14, 0, 1, 3, 4, 6, 8, 9, 11, 12, 14, 16, 17, 19, 21, 22, 24, 26, 30, 33, 36, 8, 9, 11, 12, 14, 16, 17, 19, 21, 22, 24, 25, 27, 29, 30, 32, 33, 36, 40, 42, 46, 50, 52, 56, 58, 62, 66, 68, 72, 76, 22, 24, 25, 27, 29, 30, 32, 33, 35, 37, 38, 40, 42, 43, 45]

cp's OEIS Frontend

A025120 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A000201 (lower Wythoff sequence), t = A023533.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	3
5	4
6	0
7	0
8	0
9	1
10	3
11	4
12	6
13	8
14	9
15	11
16	12
17	14
18	0
19	1
20	3
21	4
22	6
23	8
24	9
25	11
26	12
27	14
28	16
29	17
30	19
31	21
32	22
33	24
34	26
35	30
36	33
37	36
38	8
39	9
40	11
41	12
42	14
43	16
44	17
45	19
46	21
47	22
48	24
49	25
50	27
51	29
52	30
53	32
54	33
55	36
56	40
57	42
58	46
59	50
60	52
61	56
62	58
63	62
64	66
65	68
66	72
67	76
68	22
69	24
70	25
71	27
72	29
73	30
74	32
75	33
76	35
77	37
78	38
79	40
80	42
81	43
82	45

n	a(n)
1	0
2	0
3	1
4	3
5	4
6	0
7	0
8	0
9	1
10	3
11	4
12	6
13	8
14	9
15	11
16	12
17	14
18	0
19	1
20	3
21	4
22	6
23	8
24	9
25	11
26	12
27	14
28	16
29	17
30	19
31	21
32	22
33	24
34	26
35	30
36	33
37	36
38	8
39	9
40	11
41	12
42	14
43	16
44	17
45	19
46	21
47	22
48	24
49	25
50	27
51	29
52	30
53	32
54	33
55	36
56	40
57	42
58	46
59	50
60	52
61	56
62	58
63	62
64	66
65	68
66	72
67	76
68	22
69	24
70	25
71	27
72	29
73	30
74	32
75	33
76	35
77	37
78	38
79	40
80	42
81	43
82	45

cp's OEIS Frontend

A025120 a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A000201 (lower Wythoff sequence), t = A023533.

Table of values

List of values

A025120 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A000201 (lower Wythoff sequence), t = A023533.

n	a(n)
1	0
2	0
3	1
4	3
5	4
6	0
7	0
8	0
9	1
10	3
11	4
12	6
13	8
14	9
15	11
16	12
17	14
18	0
19	1
20	3
21	4
22	6
23	8
24	9
25	11
26	12
27	14
28	16
29	17
30	19
31	21
32	22
33	24
34	26
35	30
36	33
37	36
38	8
39	9
40	11
41	12
42	14
43	16
44	17
45	19
46	21
47	22
48	24
49	25
50	27
51	29
52	30
53	32
54	33
55	36
56	40
57	42
58	46
59	50
60	52
61	56
62	58
63	62
64	66
65	68
66	72
67	76
68	22
69	24
70	25
71	27
72	29
73	30
74	32
75	33
76	35
77	37
78	38
79	40
80	42
81	43
82	45