cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A075830 Let u(1) = x and u(n+1) = (n^2/u(n)) + 1 for n >= 1; then a(n) is such that u(n) = (b(n)*x + c(n))/(a(n)*x + d(n)) (in lowest terms) and a(n), b(n), c(n), d(n) are positive integers.

Table of values

n a(n)
1 0
2 1
3 1
4 5
5 7
6 47
7 37
8 319
9 533
10 1879
11 1627
12 20417
13 18107
14 263111
15 237371
16 52279
17 95549
18 1768477
19 1632341
20 33464927
21 155685007
22 166770367
23 156188887
24 3825136961
25 3602044091
26 19081066231
27 18051406831
28 57128792093
29 7751493599

List of values

[0, 1, 1, 5, 7, 47, 37, 319, 533, 1879, 1627, 20417, 18107, 263111, 237371, 52279, 95549, 1768477, 1632341, 33464927, 155685007, 166770367, 156188887, 3825136961, 3602044091, 19081066231, 18051406831, 57128792093, 7751493599]