A104587 - cp's OEIS frontend

A104587 Triangle read by rows, given by the matrix product A * B where A (A094727) = [1; 2, 3; 3, 4, 5; 4, 5, 6, 7; ...] and B = [1; 1, 1; 1, 1, 1; ...] (both are infinite lower triangular matrices with the other terms zero).

n	a(n)
0	1
1	5
2	3
3	12
4	9
5	5
6	22
7	18
8	13
9	7
10	35
11	30
12	24
13	17
14	9
15	51
16	45
17	38
18	30
19	21
20	11
21	70
22	63
23	55
24	46
25	36
26	25
27	13
28	92
29	84
30	75
31	65
32	54
33	42
34	29
35	15
36	117
37	108
38	98
39	87
40	75
41	62
42	48
43	33
44	17
45	145
46	135
47	124
48	112
49	99
50	85
51	70
52	54
53	37
54	19
55	176
56	165
57	153
58	140
59	126
60	111
61	95
62	78
63	60
64	41
65	21

[1, 5, 3, 12, 9, 5, 22, 18, 13, 7, 35, 30, 24, 17, 9, 51, 45, 38, 30, 21, 11, 70, 63, 55, 46, 36, 25, 13, 92, 84, 75, 65, 54, 42, 29, 15, 117, 108, 98, 87, 75, 62, 48, 33, 17, 145, 135, 124, 112, 99, 85, 70, 54, 37, 19, 176, 165, 153, 140, 126, 111, 95, 78, 60, 41, 21]

cp's OEIS Frontend

A104587 Triangle read by rows, given by the matrix product A * B where A (A094727) = [1; 2, 3; 3, 4, 5; 4, 5, 6, 7; ...] and B = [1; 1, 1; 1, 1, 1; ...] (both are infinite lower triangular matrices with the other terms zero).

Table of values

List of values

n	a(n)
0	1
1	5
2	3
3	12
4	9
5	5
6	22
7	18
8	13
9	7
10	35
11	30
12	24
13	17
14	9
15	51
16	45
17	38
18	30
19	21
20	11
21	70
22	63
23	55
24	46
25	36
26	25
27	13
28	92
29	84
30	75
31	65
32	54
33	42
34	29
35	15
36	117
37	108
38	98
39	87
40	75
41	62
42	48
43	33
44	17
45	145
46	135
47	124
48	112
49	99
50	85
51	70
52	54
53	37
54	19
55	176
56	165
57	153
58	140
59	126
60	111
61	95
62	78
63	60
64	41
65	21

n	a(n)
0	1
1	5
2	3
3	12
4	9
5	5
6	22
7	18
8	13
9	7
10	35
11	30
12	24
13	17
14	9
15	51
16	45
17	38
18	30
19	21
20	11
21	70
22	63
23	55
24	46
25	36
26	25
27	13
28	92
29	84
30	75
31	65
32	54
33	42
34	29
35	15
36	117
37	108
38	98
39	87
40	75
41	62
42	48
43	33
44	17
45	145
46	135
47	124
48	112
49	99
50	85
51	70
52	54
53	37
54	19
55	176
56	165
57	153
58	140
59	126
60	111
61	95
62	78
63	60
64	41
65	21

n	a(n)
0	1
1	5
2	3
3	12
4	9
5	5
6	22
7	18
8	13
9	7
10	35
11	30
12	24
13	17
14	9
15	51
16	45
17	38
18	30
19	21
20	11
21	70
22	63
23	55
24	46
25	36
26	25
27	13
28	92
29	84
30	75
31	65
32	54
33	42
34	29
35	15
36	117
37	108
38	98
39	87
40	75
41	62
42	48
43	33
44	17
45	145
46	135
47	124
48	112
49	99
50	85
51	70
52	54
53	37
54	19
55	176
56	165
57	153
58	140
59	126
60	111
61	95
62	78
63	60
64	41
65	21