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.

A228063 Integer nearest to F[4n](S(n)), where F[4n](x) are Fibonacci polynomials and S(n) = Sum_{i=0..3} (C(i)*(log(log(A*(B+n^2))))^i) (see coefficients A, B, C(i) in comments).

Table of values

n a(n)
1 4
2 21
3 143
4 1063
5 8371
6 68785
7 583436
8 5069633
9 44876757
10 403025174
11 3660702622
12 33550877248
13 309726969451
14 2876065468123
15 26835315229835
16 251389798269317
17 2362887262236150
18 22272676889496853
19 210455460654786509
20 1992806263723883464

List of values

[4, 21, 143, 1063, 8371, 68785, 583436, 5069633, 44876757, 403025174, 3660702622, 33550877248, 309726969451, 2876065468123, 26835315229835, 251389798269317, 2362887262236150, 22272676889496853, 210455460654786509, 1992806263723883464]