A278717 - cp's OEIS frontend

A278717 Triangle read by rows: T(n, m) gives the difference between the even and odd leg of the primitive Pythagorean triangle determined by (n, m) with n > m >= 1, gcd(n, m) = 1 and n+m odd, or 0 for other (n, m).

n	a(n)
2	1
3	0
4	7
5	-7
6	0
7	17
8	0
9	-1
10	0
11	31
12	-23
13	0
14	0
15	0
16	49
17	0
18	-17
19	0
20	23
21	0
22	71
23	-47
24	0
25	-7
26	0
27	41
28	0
29	97
30	0
31	-41
32	0
33	7
34	0
35	0
36	0
37	127
38	-79
39	0
40	-31
41	0
42	0
43	0
44	89
45	0
46	161
47	0
48	-73
49	0
50	-17
51	0
52	47
53	0
54	119
55	0
56	199
57	-119
58	0
59	0
60	0
61	1
62	0
63	73
64	0
65	0
66	0
67	241
68	0
69	-113
70	0
71	-49
72	0
73	23
74	0
75	103
76	0
77	191
78	0
79	287
80	-167
81	0

[1, 0, 7, -7, 0, 17, 0, -1, 0, 31, -23, 0, 0, 0, 49, 0, -17, 0, 23, 0, 71, -47, 0, -7, 0, 41, 0, 97, 0, -41, 0, 7, 0, 0, 0, 127, -79, 0, -31, 0, 0, 0, 89, 0, 161, 0, -73, 0, -17, 0, 47, 0, 119, 0, 199, -119, 0, 0, 0, 1, 0, 73, 0, 0, 0, 241, 0, -113, 0, -49, 0, 23, 0, 103, 0, 191, 0, 287, -167, 0]

cp's OEIS Frontend

A278717 Triangle read by rows: T(n, m) gives the difference between the even and odd leg of the primitive Pythagorean triangle determined by (n, m) with n > m >= 1, gcd(n, m) = 1 and n+m odd, or 0 for other (n, m).

Table of values

List of values