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.

A117415 E.g.f. (x*tan(x)-x^2)/8 (even powers only).

Table of values

n a(n)
0 0
1 0
2 1
3 12
4 272
5 9920
6 530688
7 39144448
8 3807514624
9 472197021696
10 72722212782080
11 13616619646091264
12 3046271659520557056
13 802494810618175946752
14 245880605613803859607552
15 86696940704285991905525760
16 34855851028500677184683245568

List of values

[0, 0, 1, 12, 272, 9920, 530688, 39144448, 3807514624, 472197021696, 72722212782080, 13616619646091264, 3046271659520557056, 802494810618175946752, 245880605613803859607552, 86696940704285991905525760, 34855851028500677184683245568]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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