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.

A117251 Column 0 of triangle A117250.

Table of values

n a(n)
0 1
1 1
2 -1
3 4
4 -40
5 896
6 -43008
7 4325376
8 -899678208
9 383862702080
10 -334114095890432
11 590956713604022272
12 -2117988861556815822848
13 15348576513041885002989568
14 -224527747847927003472304537600
15 6621592717332784844802427579269120

List of values

[1, 1, -1, 4, -40, 896, -43008, 4325376, -899678208, 383862702080, -334114095890432, 590956713604022272, -2117988861556815822848, 15348576513041885002989568, -224527747847927003472304537600, 6621592717332784844802427579269120]

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

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