A135857 - cp's OEIS frontend

A135857 Partial sums triangle based on A016777. Riordan convolution triangle ((1 + 2*x)/(1-x)^2, x/(1-x)).

n	a(n)
0	1
1	4
2	1
3	7
4	5
5	1
6	10
7	12
8	6
9	1
10	13
11	22
12	18
13	7
14	1
15	16
16	35
17	40
18	25
19	8
20	1
21	19
22	51
23	75
24	65
25	33
26	9
27	1
28	22
29	70
30	126
31	140
32	98
33	42
34	10
35	1
36	25
37	92
38	196
39	266
40	238
41	140
42	52
43	11
44	1
45	28
46	117
47	288
48	462
49	504
50	378
51	192
52	63
53	12
54	1

[1, 4, 1, 7, 5, 1, 10, 12, 6, 1, 13, 22, 18, 7, 1, 16, 35, 40, 25, 8, 1, 19, 51, 75, 65, 33, 9, 1, 22, 70, 126, 140, 98, 42, 10, 1, 25, 92, 196, 266, 238, 140, 52, 11, 1, 28, 117, 288, 462, 504, 378, 192, 63, 12, 1]

cp's OEIS Frontend

A135857 Partial sums triangle based on A016777. Riordan convolution triangle ((1 + 2*x)/(1-x)^2, x/(1-x)).

Table of values

List of values

n	a(n)
0	1
1	4
2	1
3	7
4	5
5	1
6	10
7	12
8	6
9	1
10	13
11	22
12	18
13	7
14	1
15	16
16	35
17	40
18	25
19	8
20	1
21	19
22	51
23	75
24	65
25	33
26	9
27	1
28	22
29	70
30	126
31	140
32	98
33	42
34	10
35	1
36	25
37	92
38	196
39	266
40	238
41	140
42	52
43	11
44	1
45	28
46	117
47	288
48	462
49	504
50	378
51	192
52	63
53	12
54	1

n	a(n)
0	1
1	4
2	1
3	7
4	5
5	1
6	10
7	12
8	6
9	1
10	13
11	22
12	18
13	7
14	1
15	16
16	35
17	40
18	25
19	8
20	1
21	19
22	51
23	75
24	65
25	33
26	9
27	1
28	22
29	70
30	126
31	140
32	98
33	42
34	10
35	1
36	25
37	92
38	196
39	266
40	238
41	140
42	52
43	11
44	1
45	28
46	117
47	288
48	462
49	504
50	378
51	192
52	63
53	12
54	1

n	a(n)
0	1
1	4
2	1
3	7
4	5
5	1
6	10
7	12
8	6
9	1
10	13
11	22
12	18
13	7
14	1
15	16
16	35
17	40
18	25
19	8
20	1
21	19
22	51
23	75
24	65
25	33
26	9
27	1
28	22
29	70
30	126
31	140
32	98
33	42
34	10
35	1
36	25
37	92
38	196
39	266
40	238
41	140
42	52
43	11
44	1
45	28
46	117
47	288
48	462
49	504
50	378
51	192
52	63
53	12
54	1