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.

A111491 a(0) = 1; for n>0, a(n) = (2^n-1)*a(n-1)-(-1)^n.

Table of values

n a(n)
0 1
1 2
2 5
3 36
4 539
5 16710
6 1052729
7 133696584
8 34092628919
9 17421333377610
10 17822024045295029
11 36481683220718924364
12 149392492788843995270579
13 1223673908433421165261312590
14 20047449641864738950476084161969
15 656894782414981901190249849735238224

List of values

[1, 2, 5, 36, 539, 16710, 1052729, 133696584, 34092628919, 17421333377610, 17822024045295029, 36481683220718924364, 149392492788843995270579, 1223673908433421165261312590, 20047449641864738950476084161969, 656894782414981901190249849735238224]