A025123 - cp's OEIS frontend

A025123 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A001950 (upper Wythoff sequence), t = A023533.

n	a(n)
1	0
2	0
3	2
4	5
5	7
6	0
7	0
8	0
9	2
10	5
11	7
12	10
13	13
14	15
15	18
16	20
17	23
18	0
19	2
20	5
21	7
22	10
23	13
24	15
25	18
26	20
27	23
28	26
29	28
30	31
31	34
32	36
33	39
34	43
35	49
36	54
37	59
38	13
39	15
40	18
41	20
42	23
43	26
44	28
45	31
46	34
47	36
48	39
49	41
50	44
51	47
52	49
53	52
54	54
55	59
56	65
57	69
58	75
59	81
60	85
61	91
62	95
63	101
64	107
65	111
66	117
67	123
68	36
69	39
70	41
71	44
72	47
73	49
74	52
75	54
76	57
77	60
78	62

[0, 0, 2, 5, 7, 0, 0, 0, 2, 5, 7, 10, 13, 15, 18, 20, 23, 0, 2, 5, 7, 10, 13, 15, 18, 20, 23, 26, 28, 31, 34, 36, 39, 43, 49, 54, 59, 13, 15, 18, 20, 23, 26, 28, 31, 34, 36, 39, 41, 44, 47, 49, 52, 54, 59, 65, 69, 75, 81, 85, 91, 95, 101, 107, 111, 117, 123, 36, 39, 41, 44, 47, 49, 52, 54, 57, 60, 62]

cp's OEIS Frontend

A025123 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A001950 (upper Wythoff sequence), t = A023533.

Table of values

List of values

n	a(n)
1	0
2	0
3	2
4	5
5	7
6	0
7	0
8	0
9	2
10	5
11	7
12	10
13	13
14	15
15	18
16	20
17	23
18	0
19	2
20	5
21	7
22	10
23	13
24	15
25	18
26	20
27	23
28	26
29	28
30	31
31	34
32	36
33	39
34	43
35	49
36	54
37	59
38	13
39	15
40	18
41	20
42	23
43	26
44	28
45	31
46	34
47	36
48	39
49	41
50	44
51	47
52	49
53	52
54	54
55	59
56	65
57	69
58	75
59	81
60	85
61	91
62	95
63	101
64	107
65	111
66	117
67	123
68	36
69	39
70	41
71	44
72	47
73	49
74	52
75	54
76	57
77	60
78	62

n	a(n)
1	0
2	0
3	2
4	5
5	7
6	0
7	0
8	0
9	2
10	5
11	7
12	10
13	13
14	15
15	18
16	20
17	23
18	0
19	2
20	5
21	7
22	10
23	13
24	15
25	18
26	20
27	23
28	26
29	28
30	31
31	34
32	36
33	39
34	43
35	49
36	54
37	59
38	13
39	15
40	18
41	20
42	23
43	26
44	28
45	31
46	34
47	36
48	39
49	41
50	44
51	47
52	49
53	52
54	54
55	59
56	65
57	69
58	75
59	81
60	85
61	91
62	95
63	101
64	107
65	111
66	117
67	123
68	36
69	39
70	41
71	44
72	47
73	49
74	52
75	54
76	57
77	60
78	62

cp's OEIS Frontend

A025123 a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A001950 (upper Wythoff sequence), t = A023533.

Table of values

List of values

A025123 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A001950 (upper Wythoff sequence), t = A023533.

n	a(n)
1	0
2	0
3	2
4	5
5	7
6	0
7	0
8	0
9	2
10	5
11	7
12	10
13	13
14	15
15	18
16	20
17	23
18	0
19	2
20	5
21	7
22	10
23	13
24	15
25	18
26	20
27	23
28	26
29	28
30	31
31	34
32	36
33	39
34	43
35	49
36	54
37	59
38	13
39	15
40	18
41	20
42	23
43	26
44	28
45	31
46	34
47	36
48	39
49	41
50	44
51	47
52	49
53	52
54	54
55	59
56	65
57	69
58	75
59	81
60	85
61	91
62	95
63	101
64	107
65	111
66	117
67	123
68	36
69	39
70	41
71	44
72	47
73	49
74	52
75	54
76	57
77	60
78	62