A084867 - cp's OEIS frontend

A084867 Symmetric square table, read by antidiagonals, such that antidiagonal sums form the first row shifted left: T(0,0)=1, T(0,k) = Sum_{m=0..k-1} T(m,k-1-m) when k > 0; and T(n,k) = T(n-1,k) + T(n,k-1) when n > 0, k > 0.

n	a(n)
0	1
1	1
2	1
3	2
4	2
5	2
6	6
7	4
8	4
9	6
10	20
11	10
12	8
13	10
14	20
15	68
16	30
17	18
18	18
19	30
20	68
21	232
22	98
23	48
24	36
25	48
26	98
27	232
28	792
29	330
30	146
31	84
32	84
33	146
34	330
35	792
36	2704
37	1122
38	476
39	230
40	168
41	230
42	476
43	1122
44	2704
45	9232
46	3826
47	1598
48	706
49	398
50	398
51	706
52	1598
53	3826
54	9232
55	31520
56	13058
57	5424

[1, 1, 1, 2, 2, 2, 6, 4, 4, 6, 20, 10, 8, 10, 20, 68, 30, 18, 18, 30, 68, 232, 98, 48, 36, 48, 98, 232, 792, 330, 146, 84, 84, 146, 330, 792, 2704, 1122, 476, 230, 168, 230, 476, 1122, 2704, 9232, 3826, 1598, 706, 398, 398, 706, 1598, 3826, 9232, 31520, 13058, 5424]

cp's OEIS Frontend

A084867 Symmetric square table, read by antidiagonals, such that antidiagonal sums form the first row shifted left: T(0,0)=1, T(0,k) = Sum_{m=0..k-1} T(m,k-1-m) when k > 0; and T(n,k) = T(n-1,k) + T(n,k-1) when n > 0, k > 0.

Table of values

List of values