A126587 - cp's OEIS frontend

A126587 a(n) is the number of integer lattice points inside the right triangle with legs 3n and 4n (and hypotenuse 5n).

n	a(n)
1	3
2	17
3	43
4	81
5	131
6	193
7	267
8	353
9	451
10	561
11	683
12	817
13	963
14	1121
15	1291
16	1473
17	1667
18	1873
19	2091
20	2321
21	2563
22	2817
23	3083
24	3361
25	3651
26	3953
27	4267
28	4593
29	4931
30	5281
31	5643
32	6017
33	6403
34	6801
35	7211
36	7633
37	8067
38	8513
39	8971
40	9441
41	9923
42	10417
43	10923
44	11441

[3, 17, 43, 81, 131, 193, 267, 353, 451, 561, 683, 817, 963, 1121, 1291, 1473, 1667, 1873, 2091, 2321, 2563, 2817, 3083, 3361, 3651, 3953, 4267, 4593, 4931, 5281, 5643, 6017, 6403, 6801, 7211, 7633, 8067, 8513, 8971, 9441, 9923, 10417, 10923, 11441]

cp's OEIS Frontend

A126587 a(n) is the number of integer lattice points inside the right triangle with legs 3n and 4n (and hypotenuse 5n).

Table of values

List of values