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.

A241242 a(n) = -2^(2*n+1)*(E(2*n+1, 1/2) + E(2*n+1, 1) + 2*(E(2*n+2, 1/2) + E(2*n+2, 1))), where E(n,x) are the Euler polynomials.

Table of values

n a(n)
0 0
1 -3
2 45
3 -1113
4 42585
5 -2348973
6 176992725
7 -17487754833
8 2195014332465
9 -341282303124693
10 64397376340013805
11 -14499110277050234553
12 3840151029102915908745
13 -1182008039799685905580413
14 418424709061213506712209285
15 -168805428822414120140493978273

List of values

[0, -3, 45, -1113, 42585, -2348973, 176992725, -17487754833, 2195014332465, -341282303124693, 64397376340013805, -14499110277050234553, 3840151029102915908745, -1182008039799685905580413, 418424709061213506712209285, -168805428822414120140493978273]