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.

A192942 Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x)=(2x+1)(2x+2)...(2x+n).

Table of values

n a(n)
0 0
1 2
2 10
3 62
4 448
5 3688
6 34056
7 348568
8 3916352
9 47919520
10 634256480
11 9029234720
12 137569217280
13 2233574372480
14 38497936301440
15 702049663399040
16 13504656880506880
17 273280886412413440
18 5803407252377602560
19 129044887279907315200

List of values

[0, 2, 10, 62, 448, 3688, 34056, 348568, 3916352, 47919520, 634256480, 9029234720, 137569217280, 2233574372480, 38497936301440, 702049663399040, 13504656880506880, 273280886412413440, 5803407252377602560, 129044887279907315200]

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

Content is available under The OEIS End-User License Agreement.