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.

A228467 Recurrence a(n) = 2^n*a(n-1) - a(n-2) with a(0)=0, a(1)=1.

Table of values

n a(n)
0 0
1 1
2 4
3 31
4 492
5 15713
6 1005140
7 128642207
8 32931399852
9 16860748082017
10 17265373104585556
11 35359467257443136671
12 144832360621113983218860
13 1186466662848698493085764449
14 19439069659280715489603181513556
15 636979433408843822314618558750438559

List of values

[0, 1, 4, 31, 492, 15713, 1005140, 128642207, 32931399852, 16860748082017, 17265373104585556, 35359467257443136671, 144832360621113983218860, 1186466662848698493085764449, 19439069659280715489603181513556, 636979433408843822314618558750438559]