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.

A192808 Constant term in the reduction of the polynomial (x^2 + 2)^n by x^3 -> x^2 + 2. See Comments.

Table of values

n a(n)
0 1
1 2
2 6
3 26
4 126
5 618
6 3022
7 14746
8 71902
9 350538
10 1708910
11 8331130
12 40615294
13 198004778
14 965298958
15 4705957722
16 22942154782
17 111845982474
18 545263681710
19 2658231220538
20 12959222223038
21 63177890368490
22 308000415667278
23 1501542003033370

List of values

[1, 2, 6, 26, 126, 618, 3022, 14746, 71902, 350538, 1708910, 8331130, 40615294, 198004778, 965298958, 4705957722, 22942154782, 111845982474, 545263681710, 2658231220538, 12959222223038, 63177890368490, 308000415667278, 1501542003033370]