A330805 - cp's OEIS frontend

A330805 Number of squares and rectangles in the interior of the square with vertices (n,0), (0,n), (-n,0) and (0,-n) in a square (x,y)-grid.

n	a(n)
0	0
1	9
2	51
3	166
4	410
5	855
6	1589
7	2716
8	4356
9	6645
10	9735
11	13794
12	19006
13	25571
14	33705
15	43640
16	55624
17	69921
18	86811
19	106590
20	129570
21	156079
22	186461
23	221076
24	260300
25	304525
26	354159
27	409626
28	471366
29	539835
30	615505
31	698864
32	790416
33	890681
34	1000195
35	1119510
36	1249194
37	1389831

[0, 9, 51, 166, 410, 855, 1589, 2716, 4356, 6645, 9735, 13794, 19006, 25571, 33705, 43640, 55624, 69921, 86811, 106590, 129570, 156079, 186461, 221076, 260300, 304525, 354159, 409626, 471366, 539835, 615505, 698864, 790416, 890681, 1000195, 1119510, 1249194, 1389831]

cp's OEIS Frontend

A330805 Number of squares and rectangles in the interior of the square with vertices (n,0), (0,n), (-n,0) and (0,-n) in a square (x,y)-grid.

Table of values

List of values