A127420 - cp's OEIS frontend

A127420 Triangle, read by rows, where row n+1 is generated from row n by first inserting zeros at positions {(m+2)*(m+3)/2, m>=0} in row n and then taking the partial sums in reverse order, for n>=2, starting with 1's in the initial two rows.

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	4
7	2
8	2
9	1
10	9
11	5
12	5
13	3
14	1
15	1
16	24
17	15
18	15
19	10
20	5
21	5
22	2
23	1
24	77
25	53
26	53
27	38
28	23
29	23
30	13
31	8
32	3
33	3
34	1
35	295
36	218
37	218
38	165
39	112
40	112
41	74
42	51
43	28
44	28
45	15
46	7
47	4
48	1
49	1
50	1329
51	1034
52	1034
53	816
54	598
55	598
56	433
57	321
58	209
59	209
60	135
61	84
62	56
63	28
64	28
65	13
66	6
67	2
68	1
69	6934
70	5605

[1, 1, 1, 2, 1, 1, 4, 2, 2, 1, 9, 5, 5, 3, 1, 1, 24, 15, 15, 10, 5, 5, 2, 1, 77, 53, 53, 38, 23, 23, 13, 8, 3, 3, 1, 295, 218, 218, 165, 112, 112, 74, 51, 28, 28, 15, 7, 4, 1, 1, 1329, 1034, 1034, 816, 598, 598, 433, 321, 209, 209, 135, 84, 56, 28, 28, 13, 6, 2, 1, 6934, 5605]

cp's OEIS Frontend

A127420 Triangle, read by rows, where row n+1 is generated from row n by first inserting zeros at positions {(m+2)*(m+3)/2, m>=0} in row n and then taking the partial sums in reverse order, for n>=2, starting with 1's in the initial two rows.

Table of values

List of values