A343894 - cp's OEIS frontend

A343894 Perimeters of integer-sided primitive triangles (a, b, c) where side a is the harmonic mean of the 2 other sides b and c, i.e., 2/a = 1/b + 1/c with b < a < c. The triples (a, b, c) are listed in increasing order of side a, and if sides a coincide, in increasing order of side b.

n	a(n)
1	13
2	37
3	47
4	71
5	73
6	107
7	121
8	143
9	183
10	177
11	181
12	191
13	241
14	239
15	249
16	253
17	291
18	299
19	347
20	337
21	359
22	409
23	421
24	429
25	431
26	433
27	491
28	517
29	503
30	529
31	563
32	537
33	541
34	579
35	587
36	649
37	659
38	661
39	671
40	753
41	743
42	769
43	759
44	781
45	831
46	767
47	789
48	793
49	897
50	851
51	923
52	863
53	913
54	947
55	1033
56	933

[13, 37, 47, 71, 73, 107, 121, 143, 183, 177, 181, 191, 241, 239, 249, 253, 291, 299, 347, 337, 359, 409, 421, 429, 431, 433, 491, 517, 503, 529, 563, 537, 541, 579, 587, 649, 659, 661, 671, 753, 743, 769, 759, 781, 831, 767, 789, 793, 897, 851, 923, 863, 913, 947, 1033, 933]

cp's OEIS Frontend

A343894 Perimeters of integer-sided primitive triangles (a, b, c) where side a is the harmonic mean of the 2 other sides b and c, i.e., 2/a = 1/b + 1/c with b < a < c. The triples (a, b, c) are listed in increasing order of side a, and if sides a coincide, in increasing order of side b.

Table of values

List of values