A213901 - cp's OEIS frontend

A213901 Fixed points of a sequence that gives the minimum length of a chain of 1,2,1,2,1,... so that the equation n*[n,1,2,1,...,n] = [x,...,y] between terminating continued fractions has a solution with x >= n^2 and y >= n^2.

n	a(n)
1	5
2	7
3	29
4	31
5	79
6	103
7	127
8	149
9	151
10	173
11	197
12	199
13	223
14	269
15	271
16	293
17	317
18	367
19	439
20	463
21	487
22	557
23	631
24	701
25	727
26	751
27	773
28	797
29	821
30	823
31	941
32	967
33	991
34	1039
35	1061

[5, 7, 29, 31, 79, 103, 127, 149, 151, 173, 197, 199, 223, 269, 271, 293, 317, 367, 439, 463, 487, 557, 631, 701, 727, 751, 773, 797, 821, 823, 941, 967, 991, 1039, 1061]

cp's OEIS Frontend

A213901 Fixed points of a sequence that gives the minimum length of a chain of 1,2,1,2,1,... so that the equation n*[n,1,2,1,...,n] = [x,...,y] between terminating continued fractions has a solution with x >= n^2 and y >= n^2.

Table of values

List of values