A176698 - cp's OEIS frontend

A176698 A symmetrical sum triangle sequence:a(n)=vector(a(n-1)).Reverse(vector(a(n-1));a(0)=1;a(1)=2;t(n,m)=2+a(n)-a(m)-a(n-m).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	8
8	8
9	1
10	1
11	28
12	34
13	28
14	1
15	1
16	104
17	130
18	130
19	104
20	1
21	1
22	400
23	502
24	522
25	502
26	400
27	1
28	1
29	1584
30	1982
31	2078
32	2078
33	1982
34	1584
35	1
36	1
37	6416
38	7998
39	8390
40	8466
41	8390
42	7998
43	6416
44	1
45	1
46	26464
47	32878
48	34454
49	34826
50	34826
51	34454
52	32878
53	26464
54	1
55	1

[1, 1, 1, 1, 2, 1, 1, 8, 8, 1, 1, 28, 34, 28, 1, 1, 104, 130, 130, 104, 1, 1, 400, 502, 522, 502, 400, 1, 1, 1584, 1982, 2078, 2078, 1982, 1584, 1, 1, 6416, 7998, 8390, 8466, 8390, 7998, 6416, 1, 1, 26464, 32878, 34454, 34826, 34826, 34454, 32878, 26464, 1, 1]

cp's OEIS Frontend

A176698 A symmetrical sum triangle sequence:a(n)=vector(a(n-1)).Reverse(vector(a(n-1));a(0)=1;a(1)=2;t(n,m)=2+a(n)-a(m)-a(n-m).

Table of values

List of values