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.

A013521 Numerator of [x^(2n)] in the Taylor expansion cos(cosec(x)-cot(x))= 1-x^2/8 -7*x^4/384 -97*x^6/46080 -2063*x^8/10321920 -17803*x^10/1238630400 -....

Table of values

n a(n)
0 1
1 -1
2 -7
3 -97
4 -2063
5 -17803
6 -250781
7 166831871
8 43685848289
9 447550424579
10 84677077231169
11 11657476758734011
12 28924058075775365981
13 44287070229737735633567
14 305190813989360271816409

List of values

[1, -1, -7, -97, -2063, -17803, -250781, 166831871, 43685848289, 447550424579, 84677077231169, 11657476758734011, 28924058075775365981, 44287070229737735633567, 305190813989360271816409]