A225952 - cp's OEIS frontend

A225952 Triangle read by rows, giving the even legs of primitive Pythagorean triangles, with zero entries for non-primitive triangles.

n	a(n)
2	4
3	0
4	12
5	8
6	0
7	24
8	0
9	20
10	0
11	40
12	12
13	0
14	0
15	0
16	60
17	0
18	28
19	0
20	56
21	0
22	84
23	16
24	0
25	48
26	0
27	80
28	0
29	112
30	0
31	36
32	0
33	72
34	0
35	0
36	0
37	144
38	20
39	0
40	60
41	0
42	0
43	0
44	140
45	0
46	180
47	0
48	44
49	0
50	88
51	0
52	132
53	0
54	176
55	0
56	220
57	24
58	0
59	0
60	0
61	120
62	0
63	168
64	0
65	0
66	0
67	264
68	0
69	52
70	0
71	104
72	0
73	156
74	0
75	208
76	0
77	260
78	0
79	312
80	28
81	0
82	84
83	0
84	140
85	0
86	0
87	0
88	252
89	0
90	308
91	0
92	364

[4, 0, 12, 8, 0, 24, 0, 20, 0, 40, 12, 0, 0, 0, 60, 0, 28, 0, 56, 0, 84, 16, 0, 48, 0, 80, 0, 112, 0, 36, 0, 72, 0, 0, 0, 144, 20, 0, 60, 0, 0, 0, 140, 0, 180, 0, 44, 0, 88, 0, 132, 0, 176, 0, 220, 24, 0, 0, 0, 120, 0, 168, 0, 0, 0, 264, 0, 52, 0, 104, 0, 156, 0, 208, 0, 260, 0, 312, 28, 0, 84, 0, 140, 0, 0, 0, 252, 0, 308, 0, 364]

cp's OEIS Frontend

A225952 Triangle read by rows, giving the even legs of primitive Pythagorean triangles, with zero entries for non-primitive triangles.

Table of values

List of values

n	a(n)
2	4
3	0
4	12
5	8
6	0
7	24
8	0
9	20
10	0
11	40
12	12
13	0
14	0
15	0
16	60
17	0
18	28
19	0
20	56
21	0
22	84
23	16
24	0
25	48
26	0
27	80
28	0
29	112
30	0
31	36
32	0
33	72
34	0
35	0
36	0
37	144
38	20
39	0
40	60
41	0
42	0
43	0
44	140
45	0
46	180
47	0
48	44
49	0
50	88
51	0
52	132
53	0
54	176
55	0
56	220
57	24
58	0
59	0
60	0
61	120
62	0
63	168
64	0
65	0
66	0
67	264
68	0
69	52
70	0
71	104
72	0
73	156
74	0
75	208
76	0
77	260
78	0
79	312
80	28
81	0
82	84
83	0
84	140
85	0
86	0
87	0
88	252
89	0
90	308
91	0
92	364

n	a(n)
2	4
3	0
4	12
5	8
6	0
7	24
8	0
9	20
10	0
11	40
12	12
13	0
14	0
15	0
16	60
17	0
18	28
19	0
20	56
21	0
22	84
23	16
24	0
25	48
26	0
27	80
28	0
29	112
30	0
31	36
32	0
33	72
34	0
35	0
36	0
37	144
38	20
39	0
40	60
41	0
42	0
43	0
44	140
45	0
46	180
47	0
48	44
49	0
50	88
51	0
52	132
53	0
54	176
55	0
56	220
57	24
58	0
59	0
60	0
61	120
62	0
63	168
64	0
65	0
66	0
67	264
68	0
69	52
70	0
71	104
72	0
73	156
74	0
75	208
76	0
77	260
78	0
79	312
80	28
81	0
82	84
83	0
84	140
85	0
86	0
87	0
88	252
89	0
90	308
91	0
92	364

n	a(n)
2	4
3	0
4	12
5	8
6	0
7	24
8	0
9	20
10	0
11	40
12	12
13	0
14	0
15	0
16	60
17	0
18	28
19	0
20	56
21	0
22	84
23	16
24	0
25	48
26	0
27	80
28	0
29	112
30	0
31	36
32	0
33	72
34	0
35	0
36	0
37	144
38	20
39	0
40	60
41	0
42	0
43	0
44	140
45	0
46	180
47	0
48	44
49	0
50	88
51	0
52	132
53	0
54	176
55	0
56	220
57	24
58	0
59	0
60	0
61	120
62	0
63	168
64	0
65	0
66	0
67	264
68	0
69	52
70	0
71	104
72	0
73	156
74	0
75	208
76	0
77	260
78	0
79	312
80	28
81	0
82	84
83	0
84	140
85	0
86	0
87	0
88	252
89	0
90	308
91	0
92	364