A291718 - cp's OEIS frontend

A291718 Triangle T(m,k) read by rows, where T(m,k) is the number of ways in which 1 <= k <= m positions can be picked in an m X m square grid such that the picked positions have a line symmetry.

n	a(n)
1	1
2	4
3	6
4	8
5	36
6	44
7	16
8	120
9	192
10	276
11	25
12	300
13	596
14	1130
15	2010
16	36
17	630
18	1436
19	3321
20	6880
21	16400
22	49
23	1176
24	3024
25	8272
26	20600
27	57564
28	120940
29	64
30	2016
31	5568
32	17528
33	49184
34	159784
35	380344
36	1075344

[1, 4, 6, 8, 36, 44, 16, 120, 192, 276, 25, 300, 596, 1130, 2010, 36, 630, 1436, 3321, 6880, 16400, 49, 1176, 3024, 8272, 20600, 57564, 120940, 64, 2016, 5568, 17528, 49184, 159784, 380344, 1075344]

cp's OEIS Frontend

A291718 Triangle T(m,k) read by rows, where T(m,k) is the number of ways in which 1 <= k <= m positions can be picked in an m X m square grid such that the picked positions have a line symmetry.

Table of values

List of values