A333434 - cp's OEIS frontend

A333434 The number of regions inside a diagonal-edged (or diamond-shaped) checkerboard of width and height 2n-1 formed by the straight line segments mutually connecting any two of the 8n-4 vertices on the perimeter.

n	a(n)
1	4
2	104
3	1080
4	5220
5	15508
6	39088
7	81464
8	144292
9	261544
10	415552
11	610460
12	942032
13	1303848
14	1803360
15	2461232
16	3250284
17	4182552
18	5269080
19	6818764
20	8326188
21	10336548
22	12621292
23	14882600
24	18368708
25	21377496
26	25168908
27	29994204

[4, 104, 1080, 5220, 15508, 39088, 81464, 144292, 261544, 415552, 610460, 942032, 1303848, 1803360, 2461232, 3250284, 4182552, 5269080, 6818764, 8326188, 10336548, 12621292, 14882600, 18368708, 21377496, 25168908, 29994204]

cp's OEIS Frontend

A333434 The number of regions inside a diagonal-edged (or diamond-shaped) checkerboard of width and height 2n-1 formed by the straight line segments mutually connecting any two of the 8n-4 vertices on the perimeter.

Table of values

List of values

cp's OEIS Frontend

A333434 The number of regions inside a diagonal-edged (or diamond-shaped) checkerboard of width and height 2*n-1 formed by the straight line segments mutually connecting any two of the 8*n-4 vertices on the perimeter.

Table of values

List of values

A333434 The number of regions inside a diagonal-edged (or diamond-shaped) checkerboard of width and height 2n-1 formed by the straight line segments mutually connecting any two of the 8n-4 vertices on the perimeter.