A135876 - cp's OEIS frontend

A135876 Square array, read by antidiagonals, where row n+1 is generated from row n by first removing terms at positions [(m+2)^2/4 - 1] for m>=0 and then taking partial sums, starting with all 1's in row 0.

n	a(n)
0	1
1	1
2	1
3	3
4	2
5	1
6	15
7	8
8	3
9	1
10	105
11	48
12	15
13	4
14	1
15	945
16	384
17	105
18	23
19	5
20	1
21	10395
22	3840
23	945
24	176
25	33
26	6
27	1
28	135135
29	46080
30	10395
31	1689
32	279
33	44
34	7
35	1
36	2027025
37	645120
38	135135
39	19524
40	2895
41	400
42	57
43	8
44	1
45	34459425
46	10321920
47	2027025
48	264207
49	35685
50	4384
51	561

[1, 1, 1, 3, 2, 1, 15, 8, 3, 1, 105, 48, 15, 4, 1, 945, 384, 105, 23, 5, 1, 10395, 3840, 945, 176, 33, 6, 1, 135135, 46080, 10395, 1689, 279, 44, 7, 1, 2027025, 645120, 135135, 19524, 2895, 400, 57, 8, 1, 34459425, 10321920, 2027025, 264207, 35685, 4384, 561]

cp's OEIS Frontend

A135876 Square array, read by antidiagonals, where row n+1 is generated from row n by first removing terms at positions [(m+2)^2/4 - 1] for m>=0 and then taking partial sums, starting with all 1's in row 0.

Table of values

List of values