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.

A291036 p-INVERT of (1,0,0,1,0,0,1,0,0,...), where p(S) = 1 - 2 S - 2 S^2.

Table of values

n a(n)
0 2
1 6
2 16
3 46
4 132
5 376
6 1074
7 3066
8 8752
9 24986
10 71328
11 203624
12 581298
13 1659462
14 4737360
15 13524006
16 38607732
17 110215648
18 314638754
19 898216794
20 2564189568
21 7320134930
22 20897197344
23 59656394448
24 170304435554
25 486177568038
26 1387918211824
27 3962167507006

List of values

[2, 6, 16, 46, 132, 376, 1074, 3066, 8752, 24986, 71328, 203624, 581298, 1659462, 4737360, 13524006, 38607732, 110215648, 314638754, 898216794, 2564189568, 7320134930, 20897197344, 59656394448, 170304435554, 486177568038, 1387918211824, 3962167507006]