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.

A383897 Expansion of e.g.f. log(1 + x)/(1 - 2*x).

Table of values

n a(n)
0 0
1 1
2 3
3 20
4 154
5 1564
6 18648
7 261792
8 4183632
9 75345696
10 1506551040
11 33147751680
12 795506123520
13 20683638213120
14 579135642946560
15 17374156466688000
16 555971699259648000
17 18903058697617920000
18 680509757426817024000
19 25859377184592752640000
20 1034374965738609696768000

List of values

[0, 1, 3, 20, 154, 1564, 18648, 261792, 4183632, 75345696, 1506551040, 33147751680, 795506123520, 20683638213120, 579135642946560, 17374156466688000, 555971699259648000, 18903058697617920000, 680509757426817024000, 25859377184592752640000, 1034374965738609696768000]

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

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