A152405 - cp's OEIS frontend

A152405 Square array, read by antidiagonals, where row n+1 is generated from row n by first removing terms in row n at positions {m*(m+1)/2, 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	14
7	8
8	3
9	1
10	86
11	45
12	14
13	4
14	1
15	645
16	318
17	86
18	22
19	5
20	1
21	5662
22	2671
23	645
24	152
25	31
26	6
27	1
28	56632
29	25805
30	5662
31	1251
32	232
33	41
34	7
35	1
36	633545
37	280609
38	56632
39	11869
40	2026
41	327
42	53
43	8
44	1
45	7820115
46	3381993
47	633545
48	126987
49	20143
50	2991
51	457
52	66
53	9
54	1

[1, 1, 1, 3, 2, 1, 14, 8, 3, 1, 86, 45, 14, 4, 1, 645, 318, 86, 22, 5, 1, 5662, 2671, 645, 152, 31, 6, 1, 56632, 25805, 5662, 1251, 232, 41, 7, 1, 633545, 280609, 56632, 11869, 2026, 327, 53, 8, 1, 7820115, 3381993, 633545, 126987, 20143, 2991, 457, 66, 9, 1]

cp's OEIS Frontend

A152405 Square array, read by antidiagonals, where row n+1 is generated from row n by first removing terms in row n at positions {m*(m+1)/2, m>=0} and then taking partial sums, starting with all 1's in row 0.

Table of values

List of values