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.

A192877 Coefficient of x in the reduction by (x^2->x+1) of the polynomial p(n,x) given in Comments.

Table of values

n a(n)
0 0
1 1
2 4
3 14
4 47
5 152
6 496
7 1601
8 5192
9 16786
10 54351
11 175836
12 569100
13 1841513
14 5959484
15 19284934
16 62407951
17 201955408
18 653543000
19 2114907025
20 6843987040
21 22147600586
22 71671151919
23 231932702004
24 750550018452
25 2428830833977

List of values

[0, 1, 4, 14, 47, 152, 496, 1601, 5192, 16786, 54351, 175836, 569100, 1841513, 5959484, 19284934, 62407951, 201955408, 653543000, 2114907025, 6843987040, 22147600586, 71671151919, 231932702004, 750550018452, 2428830833977]