A104569 - cp's OEIS frontend

A104569 Triangle read by rows: T(i,j) is the (i,j)-entry (1 <= j <= i) of the product Q*R of the infinite lower triangular matrices Q = [1; 1,3; 1,3,1; 1 3,1,3; ...] and R = [1; 1,1; 1,1,1; 1,1,1,1; ...].

n	a(n)
1	1
2	4
3	3
4	5
5	4
6	1
7	8
8	7
9	4
10	3
11	9
12	8
13	5
14	4
15	1
16	12
17	11
18	8
19	7
20	4
21	3
22	13
23	12
24	9
25	8
26	5
27	4
28	1
29	16
30	15
31	12
32	11
33	8
34	7
35	4
36	3
37	17
38	16
39	13
40	12
41	9
42	8
43	5
44	4
45	1
46	20
47	19
48	16
49	15
50	12
51	11
52	8
53	7
54	4
55	3
56	21
57	20
58	17
59	16
60	13
61	12
62	9
63	8
64	5
65	4
66	1
67	24
68	23
69	20
70	19
71	16
72	15
73	12
74	11
75	8
76	7
77	4
78	3
79	25
80	24
81	21
82	20
83	17
84	16
85	13
86	12
87	9
88	8
89	5
90	4
91	1

[1, 4, 3, 5, 4, 1, 8, 7, 4, 3, 9, 8, 5, 4, 1, 12, 11, 8, 7, 4, 3, 13, 12, 9, 8, 5, 4, 1, 16, 15, 12, 11, 8, 7, 4, 3, 17, 16, 13, 12, 9, 8, 5, 4, 1, 20, 19, 16, 15, 12, 11, 8, 7, 4, 3, 21, 20, 17, 16, 13, 12, 9, 8, 5, 4, 1, 24, 23, 20, 19, 16, 15, 12, 11, 8, 7, 4, 3, 25, 24, 21, 20, 17, 16, 13, 12, 9, 8, 5, 4, 1]

cp's OEIS Frontend

A104569 Triangle read by rows: T(i,j) is the (i,j)-entry (1 <= j <= i) of the product Q*R of the infinite lower triangular matrices Q = [1; 1,3; 1,3,1; 1 3,1,3; ...] and R = [1; 1,1; 1,1,1; 1,1,1,1; ...].

Table of values

List of values

n	a(n)
1	1
2	4
3	3
4	5
5	4
6	1
7	8
8	7
9	4
10	3
11	9
12	8
13	5
14	4
15	1
16	12
17	11
18	8
19	7
20	4
21	3
22	13
23	12
24	9
25	8
26	5
27	4
28	1
29	16
30	15
31	12
32	11
33	8
34	7
35	4
36	3
37	17
38	16
39	13
40	12
41	9
42	8
43	5
44	4
45	1
46	20
47	19
48	16
49	15
50	12
51	11
52	8
53	7
54	4
55	3
56	21
57	20
58	17
59	16
60	13
61	12
62	9
63	8
64	5
65	4
66	1
67	24
68	23
69	20
70	19
71	16
72	15
73	12
74	11
75	8
76	7
77	4
78	3
79	25
80	24
81	21
82	20
83	17
84	16
85	13
86	12
87	9
88	8
89	5
90	4
91	1

n	a(n)
1	1
2	4
3	3
4	5
5	4
6	1
7	8
8	7
9	4
10	3
11	9
12	8
13	5
14	4
15	1
16	12
17	11
18	8
19	7
20	4
21	3
22	13
23	12
24	9
25	8
26	5
27	4
28	1
29	16
30	15
31	12
32	11
33	8
34	7
35	4
36	3
37	17
38	16
39	13
40	12
41	9
42	8
43	5
44	4
45	1
46	20
47	19
48	16
49	15
50	12
51	11
52	8
53	7
54	4
55	3
56	21
57	20
58	17
59	16
60	13
61	12
62	9
63	8
64	5
65	4
66	1
67	24
68	23
69	20
70	19
71	16
72	15
73	12
74	11
75	8
76	7
77	4
78	3
79	25
80	24
81	21
82	20
83	17
84	16
85	13
86	12
87	9
88	8
89	5
90	4
91	1

n	a(n)
1	1
2	4
3	3
4	5
5	4
6	1
7	8
8	7
9	4
10	3
11	9
12	8
13	5
14	4
15	1
16	12
17	11
18	8
19	7
20	4
21	3
22	13
23	12
24	9
25	8
26	5
27	4
28	1
29	16
30	15
31	12
32	11
33	8
34	7
35	4
36	3
37	17
38	16
39	13
40	12
41	9
42	8
43	5
44	4
45	1
46	20
47	19
48	16
49	15
50	12
51	11
52	8
53	7
54	4
55	3
56	21
57	20
58	17
59	16
60	13
61	12
62	9
63	8
64	5
65	4
66	1
67	24
68	23
69	20
70	19
71	16
72	15
73	12
74	11
75	8
76	7
77	4
78	3
79	25
80	24
81	21
82	20
83	17
84	16
85	13
86	12
87	9
88	8
89	5
90	4
91	1